09th week of 2018 patent applcation highlights part 78 |
Patent application number | Title | Published |
20180062672 | BIDIRECTIONAL COUPLER - A bidirectional coupler includes the following elements. A main line and a sub-line are electromagnetically coupled. First and second resistors are each grounded at one end. First and second switches connect the sub-line to the first and second resistors or a third port. A third resistor is disposed between one end of the sub-line and the first switch or between the other end of the sub-line and the second switch. When detecting an input signal, the first switch electrically connects one end of the sub-line to the other end of the first resistor and the second switch electrically connects the other end of the sub-line to the third port. When detecting a reflected signal, the first switch electrically connects one end of the sub-line to the third port and the second switch electrically connects the other end of the sub-line to the other end of the second resistor. | 2018-03-01 |
20180062673 | METHOD AND DEVICE FOR FORMING A WIRELESS SIGNAL - A receiver for signals, comprising an amplifier arranged to receive and amplify the signals received by the receiver. The receiver also comprises a linearizer arranged to linearize the amplitude value of the output signals from the amplifier. In the receiver, the linearizer is arranged to perform said linearizing by means of determining actual and desired values of a statistical function for the amplitude values of the output signals from the amplifier and to replace the amplitude values of the output signals from the amplifier with amplitude values which have the same desired values of the statistical function. In embodiments of the receiver, the statistical function is the cumulative distribution function. | 2018-03-01 |
20180062674 | INTEGRATIVE SOFTWARE RADIO - An integrative software radio embodies a single multi-radio device including functionalities that are a superset of a plurality of individual discrete radio devices includes a radio frequency transmitter that integrates transmission capabilities of a plurality of discrete transmitters such that the radio frequency transmitter is configured to generate a first amalgamated waveform that is a combination of individual waveforms, each individual waveform corresponding to the transmission capabilities of its respective one of the plurality of discrete transmitters, wherein the transmission capabilities each of the plurality of discrete transmitters comprise operating characteristics different from one or more of the other discrete transmitters, wherein a waveform of a discrete transmitter comprises an adjustable electromagnetic wavefront and a proprietary waveform generation component; and a mission module communicatively coupled to the plurality of discrete transmitters and configured to alter the wavefront of at least one of the plurality of discrete transmitters to reduce interference among the at least one of the plurality of discrete transmitters without adjusting the proprietary waveform generation component. | 2018-03-01 |
20180062675 | RADIO FREQUENCY TRANSMITTER NOISE CANCELLATION - Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. Applying noise cancellation on a per active channel basis instead of to the entire receive band may substantially reduce the filtering requirement and number of filter coefficients or taps to save power and reduce manufacturing costs. Channelized transmitter noise cancellers, multi transmitter-receiver cross coupling cancellers, and hybrid full signal band and channelized transmitter noise cancellers are also provided. | 2018-03-01 |
20180062676 | DATA TRANSMISSION METHOD AND DEVICE - A data transmission method and a data transmission device are provided. The method includes: establishing, by a transmitting end, N different first paths between the transmitting end and a receiving end in an established network; splitting, by the transmitting end, a fixed-length data frame into N first fragments; transmitting, by the transmitting end, the first fragments to the receiving end through the corresponding first paths respectively; splitting, by the transmitting end, the data frame into N-M second fragments in a case that a failure occurs in M of the first paths during transmission of the data frame; establishing, by the transmitting end, N-M different second paths between the transmitting end and the receiving end; transmitting, by the transmitting end, the second fragments to the receiving end through the corresponding second paths respectively. | 2018-03-01 |
20180062677 | STABILIZING A SINGLE LEGGED SUPPORT STRUCTURE - Various techniques for stabilizing a single legged support structure are provided. In one example, the support structure is used in a GNSS surveying system. The GNSS surveying system includes a monopod, a GNSS receiver attached to an end of the monopod, a stabilizing device attached to the monopod, and a support structure releasably attached to the stabilizing device. The stabilizing device is configured to stabilize the monopod and GNSS receiver to remain upright without user support. | 2018-03-01 |
20180062678 | GALVANIC ISOLATION CIRCUIT, CORRESPONDING SYSTEM AND METHOD - A galvanic isolation circuit is formed by a differential transformer having primary and secondary windings for transmission of signals over a carrier between the primary and the secondary windings of the transformer. A galvanic isolation oxide layer is provide between the primary and secondary windings. Each winding includes include a center tap providing a low-impedance paths for dc and low frequency components of common-mode currents through the differential transformer. A pass-band stage is coupled to the secondary winding of the transformer and configured to permit propagation of signals over said carrier through the pass-band amplifier stage while providing for a rejection of common-mode noise. | 2018-03-01 |
20180062679 | DEMODULATOR - A demodulator includes: a demodulation section that outputs a demodulated signal demodulated from a modulated signal; an integration section | 2018-03-01 |
20180062680 | FREQUENCY DISCRIMINATOR - A frequency discriminator is described. The frequency discriminator comprises a power splitter ( | 2018-03-01 |
20180062681 | RECEIVER AND WIRELESS COMMUNICATIONS APPARATUS - Embodiments of the present invention provide a receiver and a wireless communications apparatus. The receiver includes: an attenuation circuit, configured to receive an input signal, and obtain a first signal according to the input signal; a low-noise amplification circuit, configured to receive the first signal, and obtain a second signal according to the first signal; an orthogonal down-frequency conversion circuit, configured to receive the second signal, and process the second signal to obtain an output signal; and a control circuit, configured to separately control the attenuation circuit and the low-noise amplification circuit according to power of an interference signal included in the output signal, so as to determine whether the attenuation circuit attenuates the input signal and whether the low-noise amplification circuit amplifies the first signal. | 2018-03-01 |
20180062682 | FILTERING ARCHITECTURES AND METHODS FOR WIRELESS APPLICATIONS - Filtering architectures and methods for wireless applications. In some embodiments, a wireless architecture can include a pre-amplifier filter configured to filter a signal, and an amplifier assembly configured to amplify the filtered signal. The wireless architecture can further include a filter circuit configured to provide selective filtering of the amplified signal based at least in part on a rejection level of the pre-amplifier filter and a gain of the amplifier assembly. In some embodiments, such a wireless architecture can be implemented in a packaged module or a wireless device. | 2018-03-01 |
20180062683 | ELECTRONIC APPARATUS AND MANUFACTURING METHOD OF ELECTRONIC APPARATUS - An electronic apparatus of an embodiment includes a movable housing, a main housing, a joint, a cable, and a seal structure. The joint includes a connection portion connected to the movable housing, and a fixed portion connected to the main housing. The cable extends from an inside of the movable housing to an inside of the main housing through an inside of the connection portion and an inside of the fixed portion. The seal structure seals between the movable housing and the connection portion, and seals between the main housing and the fixed portions. | 2018-03-01 |
20180062684 | ELECTRONIC DEVICE AND GRIP RECOGNITION METHOD THEREOF - An electronic device and a grip recognition method for reducing the SAR of the electronic device are provided. The electronic device of the present disclosure includes an antenna, a coupler, a processor electrically coupled to the antenna and the coupler, and a memory electrically coupled to the processor. The memory stores instructions that, when executed by the processor, cause the processor to detect a change of a transmit power value using the coupler during transmission of a radio signal through the antenna. The instructions further cause the processor to determine whether the electronic device is being gripped based on the change of the transmit power value. | 2018-03-01 |
20180062685 | WATERPROOF STRUCTURE AND MOBILE PHONE USING THE SAME - An optical fiber coupling connector includes a board, a light receiving device, two light emitting devices, a controller and an optical coupling lens. The optical coupling lens includes three main bodies, each includes a bottom surface, a top surface, an alignment surface, a first and a second side surface, a third side surface obliquely connected to the first side surface, and a fourth side surface obliquely connected to the second side surface and connected to the third side surface at a second edge. The alignment surface, the first side surface, the third side surface, the fourth side surface and the second side surface are connected to each other end to end in that order. The third side surface of each one of the main bodies contacts the fourth side surface of an adjacent one of the main bodies. At least three optical fibers positioned to the optical coupling lens. | 2018-03-01 |
20180062686 | Tethered Stylus within a concealed compartment of a protective case - The present invention comprises a protective case for a portable electronic device adapted with a storage compartment which houses a tethered stylus. The tethered stylus can be retractable. The stylus is attached to the protective case by way of a permanent tether and the storage compartment is integrally attached at one end of the protective case. | 2018-03-01 |
20180062687 | Portable Charging Case Module - Provided herein is a portable charging case module. The portable charging case module includes a case part and an auxiliary battery part. The case part includes a body configured such that an accommodation recess is formed in the front thereof to be detachably combined with a terminal, a charging coil provided in the body and configured to wirelessly charge the terminal, and a first terminal unit formed in the rear of the body and configured to be electrically or data-wise connected to the terminal. The auxiliary battery part is detachably combined with the rear of the case part, and includes a second terminal unit configured to be electrically connected to the first terminal unit in the front of the auxiliary battery part facing the rear of the case part, and a connection port configured such that a connector connected to an external power source is inserted thereinto. | 2018-03-01 |
20180062688 | Electronic Product Protective Case - An electronic product protective case includes a rear housing and a holder which further includes a magnet assembly, and the magnet assembly includes a first magnet group and a second magnet group. The first magnet group includes a first magnet and a third magnet that have opposite polarities. The second magnet group includes a second magnet and a fourth magnet that have opposite polarities. The first magnet and the second magnet have opposite polarities. The third magnet and the fourth magnet have opposite polarities. The first magnet and the second magnet are mutually absorbed, and the third magnet and the fourth magnet are mutually absorbed. | 2018-03-01 |
20180062689 | MOBILE TERMINAL AND REAR HOUSING FOR MOBILE TERMINAL - A mobile terminal includes a mobile terminal body; a rear housing which is mountable together with the mobile terminal body, a battery of the mobile terminal being provided on the rear housing; an isolation plate fixedly connected with the mobile terminal body and sealing a circuit element of the mobile terminal body, a battery interface being exposed from a side of the isolation plate facing the rear housing being, wherein the battery disposed on the rear housing is connectable electrically with the circuit element through the battery interface. | 2018-03-01 |
20180062690 | MULTI-INPUT AMPLIFIER WITH DEGENERATION SWITCHING BLOCK AND LOW LOSS BYPASS FUNCTION - Described herein are variable gain amplifiers that selectively provide variable or tailored impedances at a degeneration block and/or feedback block depending at least in part on a gain mode of the variable gain amplifier. This advantageously reduces or eliminates performance penalties in one or more gain modes. The variable impedances can be configured to improve linearity of the amplification process in targeted gain modes. The variable gain amplifier can be configured to provide a low-loss bypass mode in a low gain mode to improve signal quality. | 2018-03-01 |
20180062691 | Wearable Gesture Control Device & Method - Novel tools and techniques are provided for implementing Internet of Things (“IoT”) functionality. In some embodiments, a wearable control device (“WCD”) might receive first user input comprising one or more of touch, gesture, and/or voice input from the user. The WCD (and/or a remote computing system (“RCS”)) might analyze the first user input to identify a user device of a plurality of user devices to remotely control. The WCD might establish wireless communications with the identified user device, and might reconfigure its user interface to provide the user with command options to control the user device. The WCD might receive second user input. The WCD (and/or the RCS) might analyze the second user input to identify one or more functionalities of the user device to invoke, and might generate first command instructions, which might be sent by the WCD to the user device, via the wireless communications. | 2018-03-01 |
20180062692 | MODEM AND RF CHIPS, APPLICATION PROCESSOR INCLUDING THE SAME AND OPERATING METHOD THEREOF - A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal. | 2018-03-01 |
20180062693 | UNIFIED COMMUNICATIONS APPARATUS - A communications apparatus includes: a communications IC including a first RF pin, a second RF pin, and a third RF pin; a first front-end module connected between the first RF pin and a first RF terminal to provide a first signal path for wireless Tx and Rx, a second signal path for a first wireless LAN Rx, and a third signal path for a first wireless LAN Tx; a second front-end module connected between the third RF pin and a second RF terminal to provide a fourth signal path for a second wireless LAN Tx and a fifth signal path for a second wireless LAN Rx; and a duplexer configured to provide a first wireless LAN Tx signal to the first front-end module through the second RF pin, and provide a second wireless LAN Tx signal to the second front-end module through the second RF pin. | 2018-03-01 |
20180062694 | RADIO FREQUENCY FRONT END MODULE WITH HIGH BAND SELECTIVITY - A radio frequency front end module is provided for a high power capability and a high signal band selectivity. The front end module includes an external filter and an integrated circuit coupled with the external filter via two external filter leads. The integrated circuit includes a transmit-receive switch, a power amplifier and a low noise amplifier. The transmit-receive switch alternates between coupling an antenna port to a transmit port and coupling the antenna port to a receive port. The power amplifier amplifies a modulated radio frequency signal. The low noise amplifier amplifies a received radio frequency signal when the antenna port is coupled to the receive port. The external filter can be replaced to adapt to various requirements of signal frequency bands, without the need of modifying the layout of the integrated circuit. | 2018-03-01 |
20180062695 | A RADIO SYSTEM ANTENNA CONNECTOR ARRANGEMENT - The present disclosure relates to a radio system comprising an antenna device, an antenna connector arrangement and a radio transceiver with a transmitter branch and a receiver branch. The antenna connector arrangement connects the antenna device to the transmitter branch and to the receiver branch, and comprises a first tuneable band-stop filter, a second tuneable band-stop filter and a three-way-junction. The first tuneable band-stop filter is connected to the transmitter branch and a transmitter input port of the three-way-junction to filter radio signals, and the second tuneable band-stop filter is connected to the receiver branch and a receiver output port of the three-way-junction to filter radio signals. The three-way-junction comprises a first antenna port that is connected to the antenna device. The present disclosure also relates to an antenna connector arrangement, an antenna arrangement, and an electrically tuneable waveguide band-stop filter arrangement. | 2018-03-01 |
20180062696 | COMMUNICATION DEVICE AND CANCELLATION METHOD - A passive intermodulation (PIM) canceller of a communication device includes a combining unit, a replica generating unit, and a delay measuring instrument. The replica generating unit generates an intermodulation signal based on the amount of delay of each transmission signal. The combining unit cancels out the intermodulation signal from the reception signal using the generated intermodulation signal. The delay measuring instrument delays a transmission signal x | 2018-03-01 |
20180062697 | BROADBAND DISTRIBUTED ANTENNA SYSTEM WITH NON-DUPLEXER ISOLATOR SUB-SYSTEM - Certain aspects and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non-duplexer isolator sub-system can include an active mitigation sub-system. | 2018-03-01 |
20180062698 | METHODS FOR SIGNALING OR RECEIVING CELL IDENTITY, NETWORK IDENTITY, AND FREQUENCY HOPPING PATTERNS - Systems and methods for signaling or receiving cell identity, network identity, and/or Frequency Hopping (FH) patterns are disclosed. In some embodiments, a method of operating a wireless device in a wireless communication network includes obtaining a signal transmitted from a network node and determining a physical cell identifier, ID, of the network node based on the signal. The method also includes determining a FH pattern of the network node based on the determined physical cell ID of the network node. In this manner, the wireless device can efficiently determine the FH pattern used and may be able to determine if the wireless device should connect to the network node. | 2018-03-01 |
20180062699 | BASE STATION, TERMINAL, AND COMMUNICATION METHOD - In a base station, a first setting circuitry sets a first Narrowband for allocating a system information block (SIB) for MTC by using a predetermined default offset. A second setting circuitry sets a second Narrowband for allocating a signal other than the SIB by using the default offset and an additional offset that indicates a difference from the default offset. An allocating circuitry allocates the SIB including the additional offset to the first Narrowband, and allocates the signal other than the SIB to the second Narrowband. | 2018-03-01 |
20180062700 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN DIFFERENTIAL AND PHANTOM MODE IN VECTORING DSL - A transmitter device | 2018-03-01 |
20180062701 | RECEPTION DEVICE AND TRANSMISSION/RECEPTION SYSTEM INCLUDING SAME - The invention relates to a reception device, etc., applied to a transmission/reception system capable of performing high-speed transmission, having a structure to enable to adjust an offset without increasing a circuit area and power consumption. The reception device includes a signal input unit including an offset adjusting circuit, and an adjustment unit. When a pair of adjusting signals of which a voltage between signals is fixed to zero V is outputted from a transmission device to the reception device connected to each other via a differential signal line including at least a pair of signal lines, the signal input unit that has received the pair of adjusting signals outputs logical value data corresponding to the voltage between signals. The adjustment unit determines adjustment value data to adjust the offset of a threshold to obtain the logical value data based on the logical value data inputted in a certain period. | 2018-03-01 |
20180062702 | DIRECTIONAL COUPLING DEVICE AND METHODS FOR USE THEREWITH - Aspects of the subject disclosure may include, for example, a coupling device including a first antenna that radiates a first RF signal conveying first data; and a second antenna that radiates a second RF signal conveying the first data from the at least one transmitting device. The first RF signal and second RF signal form a combined RF signal that is bound by an outer surface of a transmission medium to propagate as a guided electromagnetic wave substantially in a single longitudinal direction along the transmission medium. Other embodiments are disclosed. | 2018-03-01 |
20180062703 | System and Method for Controlling Radio Base Station, and Related Device - In a system for controlling a radio base station, an out-of-band emergency channel based on a power cable is established between a BBU and an RRU, so that even if a unique communications interface CPRI between the BBU and the RRU is abnormal, the BBU can still effectively control the RRU using the out-of-band emergency channel. In another system for controlling a radio base station, out-of-band emergency channels based on power cables are established among multiple RRUs, so that even if a unique communications interface CPRI between a BBU and a target RRU is abnormal, the BBU can still effectively control the target RRU using an out-of-band emergency channel between any RRU (a unique communications interface CPRI of the RRU is normal) and the target RRU. In the present disclosure, the BBU can effectively control the RRU. | 2018-03-01 |
20180062704 | Wireless Connector Transmitter Module - Various embodiments of a wireless connector system are described. The system has a transmitter module and a receiver module that are configured to wirelessly transmit electrical energy and/or data via near field magnetic coupling. The wireless connector system is designed to increase the amount of wirelessly transmitted electrical power over a greater separation distance. The system is configured with various sensing circuits that alert the system to the presence of the receiver module to begin transfer of electrical power as well as undesirable objects and increased temperature that could interfere with the operation of the system. The wireless connector system is a relatively small foot print that is designed to be surface mounted. | 2018-03-01 |
20180062705 | WRITING DATA TO PRINTED MATTER WITH EMBEDDED WIRELESS DEVICES - A method of writing digital data to a plurality of printed business cards ( | 2018-03-01 |
20180062706 | MANAGING CONTACTLESS COMMUNICATIONS - Communicating via near field communication (NFC) between a reader and an application on an NFC-enabled device. A point of sale (POS) device and a consumer's mobile communication device establish an NFC session in accordance with each of the protocol layers of both International Organization for Standardization (ISO)/International Electrotechnical Commission (IEC) 14443 and ISO/IEC 7816 standards. A commerce application executing on the consumer's mobile communication device at a protocol layer above the ISO/IEC 14443 and ISO/IEC 7816 standards communicates a plurality of NFC application protocol data units (APDUs) to the POS device. At least one such APDU includes a consumer identifier. The consumer identifier includes a portion identifying the commerce application. | 2018-03-01 |
20180062707 | CARRIER AGGREGATION UNDER DIFFERENT SUBFRAME STRUCTURES - Aspects of the present disclosure provide a method for wireless communication by a wireless communications device in a wireless network, for example, for enabling carrier aggregation (CA) and dual connectivity (DC) under different subframe structures in a 5G system. In certain cases, enabling CA and DC in a 5G system may involve configuring and grouping component carriers based on a numerology criteria associated with each component carrier. The grouped component carriers may then be used to communicate in the wireless network. | 2018-03-01 |
20180062708 | OVERLAPPING CLUSTER ARCHITECTURE FOR COORDINATED MULTIPOINT (COMP) - Techniques for overlapping cluster architecture for coordinated multipoint (CoMP) are provided. According to certain aspects, a method of wireless communication by a transmission point is provided. The method generally includes receiving, from a first base station, a first signal for a first user equipment (UE) to transmit over the air, receiving, from a second base station, a second signal for a second UE to transmit over the air, and combining the first and the second signals from the first and second base stations and transmitting the combined signal to the first and second UE. | 2018-03-01 |
20180062709 | TIERED CONTROL OF ITERATIVE MIMO RECEIVERS - In order to balance the power requirements of a MIMO receiver with the gains that may be achieved through its use, an apparatus determines whether a current configuration of the UE supports iterative MIMO reception. When it is determined that the current configuration of the UE supports iterative MIMO reception, the apparatus determines whether at least one parameter of the received signal is within a corresponding target condition, respectively, for each of the at least one parameters, e.g., including determining whether a scheduling percentage meets a scheduling threshold and whether an error rate is within an error rate range. When both the configuration supports iterative MIMO reception and the signal parameter(s) meet the corresponding target condition(s), the apparatus uses the iterative MIMO receiver. If not, the apparatus uses a serial receiver. | 2018-03-01 |
20180062710 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - The present disclosure relates to a wireless communication device and a wireless communication method. A wireless communication device according to an embodiment comprises at least one processor. The at least one processor is configured to: generate user-specific reference signals used for assisting in downlink transmission; add identical or related reference signals into two or more data streams to be transmitted; and precode the two or more data streams into which the identical or related reference signals are added, so as to generate a downlink data signal. | 2018-03-01 |
20180062711 | WIRELESS COMMUNICATION DEVICE, TERMINAL DEVICE, AND METHOD - A wireless communication device including a control unit configured to generate information for a terminal device based on information acquired from the terminal device. The control unit outputs a reference signal on a first beam generated with at least two or more different first weighting matrices, generates a second weighting matrix specific to a terminal device in accordance with information transmitted from the terminal device in accordance with the reference signal, and outputs data for the terminal device on a second beam with the first weighting matrices and the second weighting matrix. The wireless communication device can supply an appropriate beam to a terminal device while preventing a problem with overhead or increase in the cost of a wireless device, which are caused by an increasing number of antenna elements when FD-MIMO is used. | 2018-03-01 |
20180062712 | METHOD AND NODE IN A WIRELESS COMMUNICATION NETWORK - Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, forming an antenna array; a plurality of transceivers, each transceiver coupled to at least one dedicated antenna element of the antenna array; and a controller configured to adjust a first subset of the transceivers to work at a first frequency band, and to adjust a second subset of the transceivers to work at a second frequency band. The first subset of transceivers and the second subset of transceivers (are disjoint and configured to operate at their respective frequency bands simultaneously. | 2018-03-01 |
20180062713 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION TERMINAL AND WIRELESS COMMUNICATION METHOD - According to one embodiment, a wireless communication device includes: a receiver configured to receive a plurality of first frames each including first information required for uplink multi-user transmission; and a transmitter configured to transmit a second frame generated on the basis of the first information included in the plurality of first frames. The transmitter does not transmit a transmission request for the first information before the first frames are received. The second frame is a frame instructing transmission of a third frame including data after a predetermined time from reception of the second frame. | 2018-03-01 |
20180062714 | PRE-CODING METHOD AND TRANSMITTER - Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal over the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a baseband signal after a first mapping and a baseband signal after a second mapping by a precoding weight and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped. | 2018-03-01 |
20180062715 | MASSIVE DIGITAL-ANALOG HYBRID ANTENNA, CHANNEL STATE INFORMATION FEEDBACK METHOD AND CHANNEL STATE INFORMATION FEEDBACK DEVICE - The present disclosure provides a massive digital-analog hybrid antenna, a CSI feedback method and a CSI feedback device. The CSI feedback method includes: at an analog precoding matrix selection stage of an analog precoding period, transmitting, by a base station, a precoded downlink reference signal and receiving first-stage CSI and measurement information fed back by a UE on a subframe corresponding to each time offset; selecting, by the base station, a target analog precoding matrix in accordance with performance measurement values of analog precoding matrices corresponding to all P time offsets; and at a target analog precoding matrix using stage of the analog precoding period, transmitting, by the base station, the downlink reference signal precoded by the target analog precoding matrix and receive second-stage CSI fed back by the UE on each predetermined subframe. | 2018-03-01 |
20180062716 | REDUCING LOCATION-DEPENDENT INTERFERENCE IN DISTRIBUTED ANTENNA SYSTEMS OPERATING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATION, AND RELATED COMPONENTS, SYSTEMS, AND METHODS - Components, systems, and methods for reducing location-based interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of spatial (i.e., phase) separation in the received MIMO communications signals. Thus, to provide phase separation of received MIMO communication signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is phase shifted in one of the polarization states to provide phase separation between received MIMO communication signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide phase separation. | 2018-03-01 |
20180062717 | ELECTRONIC DEVICE AND METHOD FOR CONTROLLING BEAM - The present disclosure relates to a 5G generation or pre-5G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. A method of an electronic device according to various embodiments of the present disclosure includes: receiving a first signal transmitted from another electronic device in a first state through a first beam; in response to the electronic device entering a designated mode, activating a sensor for detecting a change in a state of the electronic device; in response to a detection that the state of the electronic device changes from the first state to a second state using the activated sensor, determining at least one value for indicating the second state; changing a beam for receiving a signal from the first beam to a second beam based on the determined at least one value; and receiving a second signal transmitted from the another electronic device through the second beam. | 2018-03-01 |
20180062718 | COMMUNICATIONS TERMINAL, AND A METHOD FOR SELECTING A TRANSMIT ANTENNA FOR A TRANSMISSION TO A RADIO COMMUNICATIONS NETWORK - A communications terminal may include: a plurality of antennas; and a selection circuit configured to select at least one antenna of the plurality of antennas as a transmit antenna for a transmission to a radio communications network, wherein a selection of the transmit antenna may be based on a selection criterion. | 2018-03-01 |
20180062719 | MODALITIES TO TRIGGER AIR-INTERFACE BEAMFORMING IN VIRTUAL REALITY USE CASES - Methods, systems, and devices for wireless communication are described, including: generating, by a first device having at least a first antenna, a first transmission radiation profile for the first antenna; receiving, by the first device, feedback from a second device that is indicative of a position and an orientation of the second device relative to the first device, the position and the orientation described by one or more Euler angles; comparing, by the first device, the feedback received from the second device to a predetermined threshold for a trigger that alters a beamwidth of the first antenna; and generating, by the first device, a second transmission radiation profile for a second antenna of the first device based at least in part on the feedback satisfying the predetermined threshold. | 2018-03-01 |
20180062720 | MAPPING BETWEEN A CONTROL BEAM AND A DATA CHANNEL BEAM - There is a need for a beam tracking technique that reduces the time needed to perform a beamforming procedure and that reduces beam overhead. The apparatus may determine a mapping between a first beam associated with a first type of channel and a second beam associated with a second type of channel. In an aspect, the first type of channel may be different than the second type of channel. The apparatus may receive the first beam associated with the first type of channel and the second beam associated with the second type of channel. In an aspect, the first beam and the second beam may be received from a second device. | 2018-03-01 |
20180062721 | COORDINATED TRANSMISSION METHOD BASED ON BEAM DIVISION MULTIPLE ACCESS AND APPARATUS PERFORMING THE SAME - A coordinated transmission method based on beam division multiple access and an apparatus performing the same are disclosed. The coordinated transmission method in a beam division multiple access environment, which divides a service target region into a plurality of beam sectors through a plurality of antenna arrays having at least one of a pattern characteristic and a polarization characteristic, includes receiving a coordination request from a user terminal located in the service target region and performing any one among a macro diversity operation, a coordinated silence operation, and a coordinated beamforming operation for the user terminal based on an interference level included in the coordination request. | 2018-03-01 |
20180062722 | HYBRID BEAMFORMING TRANSMISSION METHOD AND NETWORK DEVICE - The present disclosure provides a hybrid beamforming transmission method and a network device. The hybrid beamforming transmission method includes steps of: determining, by a network device, a digital-domain beamforming weight matrix for a first UE in accordance with a channel measurement result; determining, by the network device, a set of beamforming weight matrices in accordance with the digital-domain beamforming weight matrix, and transmitting a signal to the first UE in an analog beamforming manner; selecting, by the network device, a beamforming weight matrix from the set of beamforming weight matrices in accordance with a measurement result from the first UE, as an analog-domain beamforming weight matrix for the first UE; and performing, by the network device, hybrid beamforming transmission in accordance with the determined digital-domain beamforming weight matrix and the selected analog-domain beamforming weight matrix. | 2018-03-01 |
20180062723 | Enabling Channel State Feedback for Multi-User Transmission in a Wireless Communication System - There is provided a method and corresponding device for enabling channel state feedback for multi-user transmission in a wireless communication system. The method comprises performing (S | 2018-03-01 |
20180062724 | METHOD AND APPARATUS FOR DOWNLINK AND UPLINK CSI ACQUISITION - Methods and apparatuses for CSI reporting mechanisms are provided. A user equipment (UE) includes a transceiver configured to receive configuration information for channel state information (CSI) calculation and reporting. The configuration information includes settings comprising at least one CSI reporting setting, at least one reference signal (RS) setting, and a measurement setting. The UE also includes a processor operably connected to the transceiver. The processor is configured to decode the configuration information and calculate CSI according to the settings, The transceiver is further configured to transmit the calculated CSI on an uplink (UL) channel. | 2018-03-01 |
20180062725 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - Even when the lengths of data items to be transmitted to users are not the same, the frames multiplexed at the same time finally have the same frame length and are transmitted. | 2018-03-01 |
20180062726 | REMOTE TUNER CLOCK DISTRIBUTION USING SERIALIZER/DESERIALIZER TECHNOLOGY - A communication system includes a first radio module and a second radio module. The first radio module includes a tuner communicatively coupled to a reference signal generator that is configured to generate a first reference signal for the tuner. The first radio module further includes a serializer configured to serialize a signal output by the tuner. The second radio module includes a deserializer configured to receive a serialized version of the signal from the serializer of the first radio module and deserialize the serialized version of the signal. The second radio module further includes a second tuner that is communicatively coupled to a clock recovery circuit. The clock recovery circuit is configured to generate a second reference signal for the second tuner based on a deserialized version of the first signal, where the second reference signal is frequency and phase locked to the first reference signal. | 2018-03-01 |
20180062727 | STEERABLE ANTENNA ASSEMBLY UTILIZING A DIELECTRIC LENS - A steerable antenna assembly (“SAA”) for receiving a plurality of incident radio frequency (“RF”) signals at a plurality of incident angles is disclosure. The SAA includes an approximately spherical dielectric lens (“SDL”), a waveguide aperture block (“WAB”), a switch aperture matrix (“SAM”), and a radial aperture combiner (“RAC”). The SDL receives and focuses the plurality of incident RF signals creating a plurality of focused RF signals at a plurality of focal points approximately along the back surface of the SDL. The WAB is positioned adjacent to the back surface of the SDL and receives the plurality of focused RF signals. The SAM electronically steers a beam of a radiation pattern produced by the SAA and switch between the pluralities of focused RF signals based on electronically steering the beam. The RAC produces a received RF signal from the plurality of focused RF signals. | 2018-03-01 |
20180062728 | DEVICE AND METHOD FOR TRANSMITTING/RECEIVING REFERENCE SIGNAL IN COMMUNICATION SYSTEM SUPPORTING FULL-DIMENSION MULTIPLE INPUT MULTIPLE OUTPUT MODE - The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4th-generation (4G) communication system, such as long term evolution (LTE), and subsequent systems. According to the present invention, a method by which a transmission device transmits a reference signal in a communication system supporting a full-dimension multiple input multiple output (FD-MIMO) mode comprises the steps of: transmitting, to a reception device, reference signals through m number of antenna ports; and transmitting, to the reception device, reference signals through n number of antenna ports, wherein the m number of antenna ports have a first polarization characteristic, the n number of antenna ports have a second polarization characteristic, the m number of antenna ports are included in a first axis of a two-dimensional space to be generated on the basis of a vertical axis and a horizontal axis of a uniform planar array (UPA) antenna, and the n number of antenna ports are included in a second axis of the two-dimensional space. | 2018-03-01 |
20180062729 | ELECTRONIC EQUIPMENT CABINETS HAVING RADIO FREQUENCY RELAYS - Electronic equipment cabinets include a relay that has an internal antenna, an external antenna and a transmission path therebetween. The internal antenna is located at least partially within the cabinet and the external antenna is located at least partially exterior to a wall of the cabinet. The relay is configured to receive uplink wireless transmissions from the wireless Internet-of-Things transceivers included on electronic devices mounted within the cabinet and to forward and rebroadcast these uplink wireless transmission to the exterior of the cabinet via the external antenna. | 2018-03-01 |
20180062730 | RADIO FREQUENCY TRANSMITTER - A radio frequency transmitter device, constituted for transmitting a radio frequency signal in a frequency band comprising at least one transmit subband and at least one receive subband, comprises: a transmit chain for processing a transmit signal associated with the at least one transmit subband; a power amplifier for amplifying the transmit signal; an output port for transmitting the amplified transmit signal; a processing unit for calculating, from the transmit signal associated with the at least one transmit subband, a correction signal in the at least one receive subband making use of a power amplifier model modelling the behavior of the power amplifier; and a coupler for adding the correction signal to the amplified transmit signal for cancelling intermodulation products in the amplified transmit signal produced by the power amplifier. | 2018-03-01 |
20180062731 | OMNIDIRECTIONAL MULTIBAND SYMMETRICAL DIPOLE ANTENNAS - Disclosed herein are various exemplary embodiments of omnidirectional multiband symmetrical dipole antennas. | 2018-03-01 |
20180062732 | SATELLITE TELEPHONE MONITORING - The terrestrial-based satellite telephone monitoring system may be used for, among other things, intelligence gathering purposes that intercept communications to or from target satellite handsets or terminals. The exemplary signal processing units receive wireless signals and extend the line-of-sight range of a terrestrial-based satellite telephone monitoring system. The exemplary signal processing unit may be installed in or on an aerial vehicle, such as an unmanned aerial vehicle (UAV), or a satellite, such as a CubeSat, or other vehicle | 2018-03-01 |
20180062733 | DYNAMIC BANDWIDTH RESOURCE ALLOCATION FOR SATELLITE DOWNLINKS - Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth among different downlink beams. The satellite may receive and compile traffic measurements and terminal parameters. The satellite may be configured with different downlink beam coverage areas, and may dynamically allocate downlink bandwidth and particular frequency channels to different beam coverage areas based on the measurements and parameters. The satellite may also assign frequency channels and time slots based on such measurements and parameters. | 2018-03-01 |
20180062734 | INTELLIGENT ROUTER - A method for switching networks aboard a moving vessel includes determining that a first network-connection device located aboard the moving vessel is communicatively coupled to a first network located off the moving vessel; determining that a second network-connection device aboard the moving vessel is able to communicatively couple to a second network, the second network selected from available networks located off the moving vessel; and connecting the second network-connection device to the second network. | 2018-03-01 |
20180062735 | CLOUD MASK DATA ACQUISITION AND DISTRIBUTION USING GEOSYNCHRONOUS COMMUNICATIONS OR BROADCAST SATELLITES - Cloud mask image data is obtained by a secondary imaging payload disposed on a communications or broadcast satellite operating in geosynchronous orbit. The obtained cloud mask image data is provisioned for use, in near real time, by one or more low earth orbit imaging satellite systems. Provisioning the obtained cloud mask image data may include collecting the data on the ground and making it available to one or more operators of the one or more LEO imaging satellite systems and/or transmitting the data from the communications or broadcast satellite to at least one spacecraft in the one or more LEO imaging satellite systems. | 2018-03-01 |
20180062736 | METHOD AND SYSTEM FOR MONITORING, MANAGEMENT AND MAINTENANCE OF AN INTERNET PROTOCOL LNB - Methods and systems for monitoring and maintenance of satellite dish assemblies. In a satellite dish assembly, baseline settings of the satellite dish assembly may be determined, and then current settings of the satellite dish assembly may be monitored, to identify deviations from the baseline settings. The settings may comprise a location setting, an alignment setting, and/or a received signal strength. The results of the monitoring may be reported to a service provider, which may determine based on the reported results adjustment information for applying adjustments to the satellite dish assembly. The adjustments may comprise adjusting the satellite dish assembly back to the baseline settings. The adjustment information may be provided to a technician and/or a user for applying the adjustments to the satellite dish assembly. The satellite dish assembly may communicated to the technician and/or the user, while applying the adjustments, information relating to current settings. | 2018-03-01 |
20180062737 | Satellite System Comprising Satellites in LEO and Other Orbits - A satellite communications system comprising satellites in low earth orbit (LEO) as well as one or more satellites in orbits other than LEO, such as satellites in medium earth orbit (MEO) and/or satellites in geostationary orbit (GEO). The system routes data packets, such as may be received from the Internet, to either the LEO satellites or non-LEO satellites in accordance with routing logic. In some embodiments, the routing logic is based on the latency of the communications. | 2018-03-01 |
20180062738 | REPEATER OTDR USING REPEATER BASED RAMAN PUMPS - A submarine optical repeater includes a submarine amplifier module, which further includes a pumping laser module and an optical detector module. The pumping laser module generates optical amplifications within an optical cable, and, in the case of a fault in the optical cable, the optical detector module detects at least one characteristic of an optical signal caused by the fault in the optical cable. This configuration then identifies a particular signal characteristic that indicates a fault within the optical cable. | 2018-03-01 |
20180062739 | BANDWIDTH THROTTLING - A bandwidth throttling method is provided. The method includes receiving by a receiver from a QD Vcel cannon, a plurality of multi-frequency light pulses via a plurality of channels. The receiver determines that the plurality of multi-frequency light pulses comprises an out of band (OOB) signal transmitted over a first channel of the plurality of channels. The receiver receives from a first laser device of the QD Vcel cannon, a first light pulse of the plurality of multi-frequency light pulses. The first light pulse includes a first frequency for testing a visibility of the first light pulse at the receiver. The receiver determines if the first light pulse is visible at the receiver. | 2018-03-01 |
20180062740 | METHOD AND SYSTEM FOR WIRELESS DATA TRANSMISSION - A method for wireless data transmission between a first communication device and a second communication device, wherein the first communication device acts as a data source and the second communication device acts as a data sink, includes: splitting, by the data source, data to be transmitted from the data source to the data sink into a carrier signal for a radio channel and an optical carrier signal by modulating the carrier signals; transmitting the data via a hybrid transmission path from the data source to the data sink by simultaneously transmitting some of the data via the radio channel and some of the data via a wireless optical direct channel; and merging, by the data sink, via a demodulation process, the data transmitted via the radio channel and the data transmitted via the wireless optical direct channel. | 2018-03-01 |
20180062741 | ALIGNMENT IN LINE-OF-SIGHT COMMUNICATION NETWORKS - Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Particularly, systems and methods are provided for aligning nodes in a line-of-sight communication network with their peers. The nodes may be placed and passively aligned with one another as position information is passed between peers. The elevation indicated in the position information may be refined based upon relative barometric pressure readings between peers. In a next phase, isolated networks of nodes may be integrated with the network of nodes contacting the Internet backbone. Finally, routing algorithms may be implemented to address weather effects (e.g., fog) and congestion to optimize network service. | 2018-03-01 |
20180062742 | BIDIRECTIONAL DATA COMMUNICATIONS CABLE - A bidirectional data communications cable is disclosed. The cable includes first connector, second connector, and cable housing coupled to the first and second connectors. The first connector includes a controller configured to determine whether the first connector is connected to a data source or data sink. If connected to a data source, the controller configures a switch circuit to route a data signal from the data source to an optical modulator for modulating an optical signal for transmission from the first to the second connector via an optical fiber. If connected to a data sink, the controller configures the switch circuit to route a data signal from an optical demodulator to the data sink, the optical demodulator receiving an optical signal modulated with the data signal from the second connector via an optical fiber. The second connector is configured similar to the first connector. The cable housing encloses the optical fibers. | 2018-03-01 |
20180062743 | EXTREMELY HIGH FREQUENCY (EHF) DISTRIBUTED ANTENNA SYSTEMS, AND RELATED COMPONENTS AND METHODS - Extremely High Frequency (EHF) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing EHF modulated data signals to a RAU(s) is provided. The base unit includes a downlink data source input configured to receive downlink electrical data signal(s) from a data source. The base unit also includes an E-O converter configured to convert downlink electrical data signal(s) into downlink optical data signal(s). The base unit also includes an oscillator configured to generate an electrical carrier signal at a center frequency in the EHF band. The base unit also includes a modulator configured to combine the downlink optical data signal(s) with the electrical carrier signal to form downlink modulated optical signal(s) comprising a downlink optical data signal(s) modulated at the center frequency of the electrical carrier signal. The modulator is further configured to send the downlink modulated optical signal to the RAU(s). | 2018-03-01 |
20180062744 | DIGITAL DISTRIBUTED ANTENNA SYSTEMS AND METHODS FOR ADVANCED CELLULAR COMMUNICATION PROTOCOLS - Digital distributed antenna systems and methods for advanced cellular communication protocols are provided. In one embodiment, a digital distributed antenna system comprises: a host unit; a plurality of remote antenna units each communicatively coupled to the host unit, wherein a downlink digitized RF signal is transported from the host unit to at least one of the plurality of remote antenna units, and wherein the at least one of the remote antenna units is configured to generate an analog RF signal from the downlink digitized RF signal; and a signal conditioning and control module that extracts from a first digitized RF signal at least one data stream and converts the at least one data stream to baseband data. | 2018-03-01 |
20180062745 | UNIFIED OPTICAL FIBER-BASED DISTRIBUTED ANTENNA SYSTEMS (DASS) FOR SUPPORTING SMALL CELL COMMUNICATIONS DEPLOYMENT FROM MULTIPLE SMALL CELL SERVICE PROVIDERS, AND RELATED DEVICES AND METHODS - Unified optical fiber-based distributed antenna systems (DASs) for supporting small cell communications deployment from multiple small cell service providers are disclosed. The unified optical fiber-based DASs disclosed herein are configured to receive multiple small cell communications from different small cell service providers to be deployed over optical fiber to small cells in the DAS. In this manner, the same DAS architecture can be employed to distribute different small cell communications from different small cell service providers to small cells. Use of optical fiber for delivering small cell communications can reduce the risk of having to deploy new cabling if bandwidth needs for future small cell communication services exceeds conductive wiring capabilities. Optical fiber cabling can also allow for higher distance cable runs to the small cells due to the lower loss of optical fiber, which can provide for enhanced centralization services. | 2018-03-01 |
20180062746 | STATION-SIDE DEVICE AND OPTICAL TRANSMISSION SYSTEM - A selection and distribution circuit ( | 2018-03-01 |
20180062747 | Optical Communication Module - An optic module for use with a host is disclosed that includes a port configured to accept an optical connector connected to fiber optic cables which carry optic signals. A receiver module is configured to receive an incoming optic signal and convert the received optic signal to a received electrical signal while a transimpedance amplifier amplifies the received electrical signal. An electrical interface is configured to electrically interface the optic module with the host thereby providing the amplified received electrical signal to a digital signal processor in the host. On the transmit side, an optic device driver receives an outgoing electrical signal from the host, after processing by a digital signal processor in the host, for amplification while a transmit module is configured to convert the outgoing electrical signal to an outgoing optic signal and transmit the outgoing optic signal on an optic fiber. | 2018-03-01 |
20180062748 | Method And System For Optical Alignment To A Silicon Photonically-Enabled Integrated Circuit - Methods and systems for optical alignment to a silicon photonically-enabled integrated circuit may include aligning an optical assembly to a photonics die comprising a transceiver by, at least, communicating optical signals from the optical assembly into a plurality of grating couplers in the photonics die, communicating the one or more optical signals from the plurality of grating couplers to optical taps, with each tap having a first output coupled to the transceiver and a second output coupled to a corresponding output grating coupler, and monitoring an output optical signal communicated out of said photonic chip via said output grating couplers. The monitored output optical signal may be maximized by adjusting a position of the optical assembly. The optical assembly may include an optical source assembly comprising one or more lasers or the optical assembly may comprise a fiber array. Such a fiber array may include single mode optical fibers. | 2018-03-01 |
20180062749 | LOW-POWER FIBER OPTIC TRANSCEIVER - The present disclosure pertains to systems and methods for low-power optical transceivers. In one embodiment, a low-power optical transceiver may include a microcontroller and an optical receiver and an optical transmitter in communication with and controlled by the microcontroller. The optical receiver may include a photodetector configured to receive a first optical representation of a first signal to be received and to generate an electrical representation of the first signal. An amplifier may amplify the electrical representation of the first signal, and an output in electrical communication with the amplifier may generate an electrical output. The optical transmitter may include a laser diode configured to generate a second optical representation of a second signal to be transmitted. The microcontroller may be configured to control an output power of the laser diode. | 2018-03-01 |
20180062750 | FIBER OPTIC SWITCHING NETWORK USING A WIDEBAND COMB LASER - A fiber optic switching network includes a comb laser source that provides laser light at a plurality of wavelengths on a single optical fiber. Light from the comb laser source is directed into different optical fibers by a demultiplexer such as an arrayed waveguide grating (AWG) or cyclic AWG. Light from the demultiplexer is modulated with one or more demodulators and re-combined with a multiplexer into a single optical fiber for transmission to a destination. | 2018-03-01 |
20180062751 | OFF QUADRATURE MACH-ZEHNDER MODULATOR BIASING - The present invention relates to telecommunication techniques and integrated circuit (IC) devices. More specifically, embodiments of the present invention provide an off-quadrature modulation system. Once an off-quadrature modulation position is determined, a ratio between DC power transfer amplitude and dither tone amplitude for a modulator is as a control loop target to stabilize off-quadrature modulation. DC power transfer amplitude is obtained by measuring and sampling the output of an optical modulator. Dither tone amplitude is obtained by measuring and sampling the modulator output and performing calculation using the optical modulator output values and corresponding dither tone values. There are other embodiments as well. | 2018-03-01 |
20180062752 | PHASED-ARRAY RADIO FREQUENCY RECEIVER - A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal. | 2018-03-01 |
20180062753 | METHODS AND APPARATUS FOR LOW-LOSS RECONFIGURABLE OPTICAL QUADRATURE AMPLITUDE MODULATION (QAM) SIGNAL GENERATION - In some embodiments, an apparatus includes a quadrature amplitude modulation (QAM) optical modulator which includes a first phase modulator (PM), a second PM, a tunable optical coupler (TOC), and an optical combiner (OC). The TOC is configured to split a light wave at an adjustable power splitting ratio to produce a first split light wave and a second split light wave. The first PM is configured to modulate the first split light wave in response to a first multi-level electrical signal to produce a first modulated light wave. The second PM is configured to modulate the second split light wave in response to a second multi-level electrical signal to produce a second modulated light wave. The OC is then configured to combine the first modulated light wave and the second modulated light wave to generate a QAM optical signal. | 2018-03-01 |
20180062754 | ELECTRO-OPTIC PHASE MODULATOR WITH NO RESIDUAL AMPLITUDE MODULATION - An optical phase modulator includes an input source that is configured to receive a light source. There is an output operative to provide a phase modulated output signal based on the received light source. There is a first optical coupler configured to split the light source into a first optical path of a Mach Zehnder Interferometer (MZI) and a second optical path of the MZI. A static phase shifter is configured to provide a static phase shift to the first optical path. There is a phase modulator in the second optical path. There is a second optical coupler configured to combine the first optical path and the second optical path. The first and second optical couplers are tuned such that the phase modulated optical signal at the output provides a substantially constant amplitude that is independent of a change in loss introduced by the phase modulator. | 2018-03-01 |
20180062755 | PHASE MODULATOR WITH REDUCED RESIDUAL AMPLITUDE MODULATION - A phase modulator with reduced Residual Amplitude Modulation includes a main path; a correction path; a first coupler configured to split, at a first ratio, an input to the main path and the correction path; and a second coupler configured to combine outputs from the main path and the correction path and to split the combined outputs, at a second ratio, with a first output comprising an output of the phase modulator with the reduced Residual Amplitude Modulation. The correction path can include a correction signal with a proper amplitude and phase that, when combined with an output signal from the main path by the second coupler, cancels the Residual Amplitude Modulation from the output signal. | 2018-03-01 |
20180062756 | TECHNIQUES FOR REDUCING ELECTRICAL INTERCONNECTION LOSSES BETWEEN A TRANSMITTER OPTICAL SUBASSEMBLY (TOSA) AND ASSOCIATED DRIVER CIRCUITRY AND AN OPTICAL TRANSCEIVER SYSTEM USING THE SAME - Techniques are disclosed for providing relatively short distances between multi-channel transmitter optical subassemblies (TOSAs) and associated transmit connecting circuit in order to reduce losses due to signal propagation delays, also sometimes referred to as signal flight time delays. In an embodiment, a TOSA includes a plurality of laser assemblies disposed along a same sidewall of the TOSA along a longitudinal axis. The TOSA may be disposed within an optical transceiver housing in a transverse orientation, whereby a longitudinal center line of the multi-channel TOSA is substantially perpendicular to the longitudinal axis of the optical transceiver housing. The TOSA may be positioned adjacent an end of the optical transceiver housing having a transmit connecting circuit. Thus each of the plurality of laser assemblies may be positioned at a relatively short distance, e.g., 120 microns or less, away from the transmit connecting circuit. | 2018-03-01 |
20180062757 | COHERENT RECEIVER - The coherent receiver includes a housing, a first multi-mode interference device that includes a first local light input port and a first signal light input port, a second multi-mode interference device that includes a second local light input port and a second signal light input port, a first splitter, a first reflector, a second splitter, a second reflector, and a mounting area on an optical path between the first splitter and the firs local light input port, where the mount area mounts an attenuator for the signal light that attenuates a magnitude of a portion of the local light. | 2018-03-01 |
20180062758 | Fading Mitigation of Turbulent Channel Based On Polarization Diversity in Coherent Optical Receivers - A method includes receiving a first data packet on a first polarization portion of an optical signal from a second communication terminal through a free space optical link during a first time period and receiving a first data packet replica on the first polarization portion of the optical signal during a second time period. The second time period is delayed in time relative to the first time period. The method also includes determining receiving powers for the optical link during both the first time period and the second time period based on at least one of the received first data packet and the received first data packet replica. The method also includes selecting the one of the first data packet or the first data packet replica that is associated with the highest receiving power for the optical link as surviving data for maintaining the optical link. | 2018-03-01 |
20180062759 | METHODS FOR COMPENSATION OF CROSS-POLARIZATION MODULATION (XPOLM) IMPAIRMENTS IN COHERENT OPTICAL COMMUNICATIONS - Methods and systems for decoding symbols transmitted over an optical channel having a cross-polarization modulation (XPolM) impairment, wherein an optical signal is polarized to encode the symbols on an x-polarization and an y-polarization before transmitted. The method including receiving the optical signal transmitted over the optical channel. Sampling the optical signal to produce a sequence of digital samples, wherein each digital sample includes a measurement of each polarization of the optical signal at an instance of time. Selecting a subset of the sequence of digital samples that includes a digital sample and neighboring digital samples on the sequence. Repeating the selecting and the determining for each digital sample remaining in the sequence of digital samples to produce a sequence of cross-talk coefficients; and decoding some of the symbols from the sequence of digital samples using cross-talk models with corresponding cross-talk coefficients, wherein method steps are performed using a processor. | 2018-03-01 |
20180062760 | SINGLE-CHIP TRANSCEIVER WITH ELECTRONIC DISPERSION COMPENSATION FOR COHERENT OPTICAL CHANNELS - A transceiver for fiber optic communications. The transceiver can include a transmitter module having a transmitter host interface configured to receive an input host signal; a transmitter framer configured to frame the input host signal and to generate a framed host signal; and a transmitter coder configured to encode the framed host signal to generate an encoded host signal for transmission over a communication channel. The transceiver can also include a receiver module having a bulk chromatic dispersion, fiber length estimation, and coarse carrier recovery circuit configured to equalize a digital input ingress signal to generate an equalized ingress signal; a receiver framer configured to frame the equalized ingress signal to generate a framed ingress signal; and a receiver host interface configured to output the framed ingress signal. The receiver host interface is compatible with a framing protocol of the receiver framer. | 2018-03-01 |
20180062761 | Split Photodetector for Differential Receivers - An optical cavity is formed to have a circuitous configuration. The optical cavity is configured to receive light coupled from a waveguide. At least two photodetector sections are formed over respective portions of the optical cavity. Each of the at least two photodetector sections is configured to detect light present within the optical cavity. Each of the at least two photodetector sections is configured for separate and independent control. | 2018-03-01 |
20180062762 | OPTICAL SIGNAL RECEIVING APPARATUS FOR RECEIVING OPTICAL SIGNAL IN BURST MODE - An optical signal receiving apparatus included in an optical line terminal (OLT) includes a resistor disposed between a capacitor connected to a receiving optical sub-assembly (ROSA) and a limiting amplifier, wherein a resistance value of the resistor may be determined based on the OLT receives an optical signal from an optical network unit (ONU) and whether the ONU transmitting the optical signal to the OLT is switched, the resistance value of the resistor may be determined to reduce a data loss occurring from the optical signal receiving apparatus in response to the OLT receiving the optical signal from the ONU, and the resistance value of the resistor may be determined such that the optical signal receiving apparatus more rapidly follows a change in intensity of the optical signal in response to the ONU transmitting the optical signal to the OLT being switched. | 2018-03-01 |
20180062763 | Method And System For A Narrowband, Non-Linear Optoelectronic Receiver - Methods and systems for a narrowband, non-linear optoelectronic receiver are disclosed and may include amplifying a received signal, limiting a bandwidth of the received signal, and restoring the signal utilizing a level restorer, which may include a non-return to zero (NRZ) level restorer. The NRZ level restorer may include a pulse-triggered bistable circuit, which may include two parallel inverters, with one being a feedback path for the other. The inverters may be single-ended or differential. A photogenerated signal may be amplified in the receiver utilizing a transimpedance amplifier and programmable gain amplifiers (PGAs). A received electrical signal may be amplified via PGAs. The bandwidth of the received signal may be limited utilizing one or more of: a low pass filter, a bandpass filter, a high pass filter, a differentiator, or a series capacitance on the chip. The signal may be received from a photodiode integrated on the chip. | 2018-03-01 |
20180062764 | ENTANGLED LINKS, TRANSACTIONS AND TREES FOR DISTRIBUTED COMPUTING SYSTEMS - An entangled links mechanism to establish and maintain bipartite temporal intimacy between pairs of computers, using an idempotent, reversible token method which presents no observable external “change” until a communication of information needs to occur between the computers, and which maintains the potential for “bounded (or unbounded) reversibility” in case the intended information dispatched by a source computational entity is not captured or properly accepted by a destination computational entity. The mechanism enables distributed computers in a network to remain continuously aware of each other's presence; to communicate on a logically nearest neighbor basis in a secure and reliable manner in which packets passed over these links do not conflict with normal traffic or cause the available resources of the link to be exceeded; and that atomicity, consistency, isolation, and “reversible durability” may be maintained for transactions when perturbations occur. | 2018-03-01 |
20180062765 | COMMUNICATIONS SYSTEM - A communication system using vector and scalar potential is disclosed. The system uses field-free potentials signaling for many applications where the absence of shielding effects in sea water, plasma or other dense media due to the fact that the absence of (E,B) fields eliminates the possibility of induced charge and current response in the media being transited. | 2018-03-01 |
20180062766 | SYSTEMS AND METHODS FOR UNDERWATER ILLUMINATION, SURVEY, AND WIRELESS OPTICAL COMMUNICATIONS - Embodiments of the present disclosure describe an underwater optical communication and illumination system employing laser diodes directly encoded with data, including spectrally efficient orthogonal frequency division multiplex quadrature amplitude modulation (QAM-OFDM) data. A broadband light source may be utilized to provide both illumination to an underwater field of interest and underwater optical communication from the field of interest to a remote location. | 2018-03-01 |
20180062767 | TRANSMITTER BEAMFORMING FOR SELF-INTERFERENCE CANCELLATION - Aspects of the present disclosure provide methods and apparatus for applying transmitter beamforming for self-interference cancellation. According to aspects, a method generally includes in an acquisition phase, iteratively acquiring received power measurements for different receive chains for transmissions sent via a plurality of beam directions; estimating a self-interference subspace eigenvector based, at least in part, on the received power measurements; based on the estimated self-interference subspace eigenvector, performing a local search of a nullspace to identify a filtering eigenvector; and applying the filtering eigenvector to one or more transmission chains to cancel self-interference on one or more receive chains. | 2018-03-01 |
20180062768 | INTEGRATED RF CIRCUIT WITH PHASE-NOISE TEST CAPABILITY TECHNICAL FIELD - An integrated circuit is described herein. According to one or more embodiments, the integrated circuit includes a local oscillator with a voltage-controlled oscillator (VCO) that generates a local oscillator signal. Further, the integrated circuit includes a frequency divider coupled to the VCO downstream thereof. The frequency divider provides a frequency-divided local oscillator signal by reducing the frequency of the local oscillator signal by a constant factor. A first test pad of the integrated circuit is configured to receive a reference oscillator signal. Further, the integrated circuit includes a first mixer that receives the reference oscillator signal and the frequency-divided local oscillator signal to down-convert the frequency-divided local oscillator signal. | 2018-03-01 |
20180062769 | MOTION DETECTING APPARATUS, MOTION DETECTING METHOD AND MOTION DETECTING ANTENNA - A motion detecting apparatus includes a motion detecting antenna for radiating a plurality of radio waves having different frequencies, a motion detector for providing a plurality of detection signals having different frequencies to the motion detecting antenna and receiving reflection signals from the motion detecting antenna, and a controller for determining a motion of a driver based on the reflection signals received by the motion detector. | 2018-03-01 |
20180062770 | Efficient Scheduling of Beam Quality Measurement Signals to Multiple Wireless Devices - The disclosure relates to methods, devices, and computer programs in mobile communications. More specifically, the proposed technique relates to beam quality reference signals transmitted by the network for use by wireless devices to measure the quality of neighbor cells or beams for mobility purposes. In particular the disclosure relates to a method, performed in a wireless communication system for scheduling beam quality measurement signals to be transmitted from one or more access points | 2018-03-01 |
20180062771 | DISPLAY DEVICE, IMAGE GENERATION DEVICE, COMMUNICATION DEVICE, COMMUNICATION SYSTEM, ANTENNA ADJUSTMENT METHOD, IMAGE GENERATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM - Provided is a display device that enables easy adjustment of an antenna in the most appropriate direction. An antenna angle acquisition unit ( | 2018-03-01 |