| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 398096000 | Through free space | 15 |
| 20080240718 | Free-Space Communications System and Method - Embodiments of the invention are directed to a free-space communications system, a signal transmission platform for a free-space communications system, and a method for free-space communications, that advantageously provide or have the potential to provide measurable improvements in free-space communications over a turbulent atmospheric transmission path. A principal feature of all of the embodiments disclosed herein is the generation of a pseudo-non-diffracting communications signal transmission beam, referred to herein as a ‘non-diffracting signal transmission beam’. A realizable embodiment of such a non-diffracting signal transmission beam known in the art is a Bessel beam. A free-space communications system includes a communications signal transmitter platform that ultimately can generate a particularly specified transmission signal waveform, which is a non-diffracting signal transmission beam. The free-space communications system also includes a communications signal receiver platform that is located along a free-space communications signal transmission path. By modifying the signal light source from Gaussian to Bessel or other non-diffracting type beams, intensity stability under turbulence is improved. This passive technique, by virtue of increased intensity stability, may help to maintain bit error rate performance under turbulence. | 10-02-2008 |
| 20080240719 | METHOD AND APPARATUS FOR ESTABLISHING SYSTEM DELAY TIME AND FRAME LENGTH IN TIME DIVISION DUPLEXING SYSTEM - A method of establishing a system delay time and a frame length in a Time Division Duplexing (TDD) system includes adjusting time lengths of an uplink (UL) frame, a downlink (DL) frame, a Transmit/receive Transition Gap (TTG), and a Receive/transmit Transition Gap (RTG); a Base Station (BS) transmitting a DL frame and receiving a UL frame; and a Mobile Station (MS) receiving the DL frame and transmitting the UL frame. | 10-02-2008 |
| 20110274432 | Amplification of Interleaved Optical Signals - A technique for generating a data signal and a beacon signal for free space optical communications involves generating a data signal having a first optical wavelength and a beacon signal having a second optical wavelength. The data signal is encoded with data via modulation at a first modulation rate. The beacon signal is an inverted version of the data signal and can be further modulated at a second modulation rate that is less than the first modulation rate. The data and beacon signals are optically combined to produce a combined signal in which power attributable to the beacon signal is interleaved with and substantially non-overlapping temporally with power attributable to the data signal. The combined signal is amplified via a fiber amplifier, and the combined signal is supplied to transmitter optics for transmitting the data signal and the beacon signal into free space. | 11-10-2011 |
| 20120328298 | PHASE SHIFTER AND PHOTONIC CONTROLLED BEAM FORMER FOR PHASED ARRAY ANTENNAS - A beam forming antenna device emitting a predetermined free space energy pattern, the device including: an optical signal source having predetermined wavelength characteristics; an optical modulator for modulating predetermined wavelengths of the optical signal source to produce a modulated signal source including frequency sideband components; a dispersion element for spreading and projecting the modulated signal source in a wavelength dependant manner onto a relative phase manipulation element; a relative phase manipulation element manipulating the relative phase of the modulated signal source in a predetermined manner, said phase manipulation element further amplitude modulating predetermined wavelengths of said modulated signal source and outputting a predetermined groupings of wavelengths on a series of output ports; optical to electrical conversion means converting the amplitude of the optical signal on said output ports to a corresponding electrical signal; and a series of irradiating antenna elements connected to each corresponding electrical signal for radiating a corresponding free space signal to substantially produce said predetermined free space energy pattern. | 12-27-2012 |
| 20130004176 | COMMUNICATION SYSTEM, MAIN UNIT, RADIO ACCESS UNIT AND COMMUNICATION METHOD - A plurality of radio access units ( | 01-03-2013 |
| 20130188959 | PROVIDING DIGITAL DATA SERVICES IN OPTICAL FIBER-BASED DISTRIBUTED RADIO FREQUENCY (RF) COMMUNICATION SYSTEMS, AND RELATED COMPONENTS AND METHODS - Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM). Power distributed in the optical fiber-based distributed communications system to provide power to remote antenna units can also be accessed to provide power to digital data service components. | 07-25-2013 |
| 20130195464 | SYSTEM FOR OPTICAL OPEN SPACE DATA COMMUNICATION BASED ON DISCRETE OUTPUT LEVELS - A system for open space data communication comprising a transmitting device and an optical receiver using multiple varying levels of emitted radiation output. The transmitting device includes multiple emitter groups that are capable of being switched on and off and each of which can be activated in parallel to emit fixed, varying radiation outputs. A total radiation output emitted by the transmitting device is defined by a sum of the emitted radiation outputs of the emitter groups, wherein to transmit a bit vector (b | 08-01-2013 |
| 20130236182 | Repeater - Embodiments of the present invention provide a repeater, including a local unit and a remote unit. The local unit includes a base station interface unit, multiple local basic units and a controller. The remote unit includes multiple remote basic units. The controller is configured to generate, according to a down-tilt angle and/or azimuth angle of a downlink signal instructed by a control instruction, a downlink signal phase for each remote basic unit. The multiple local basic units each are configured to perform, according to the downlink signal phase generated by the controller for a corresponding remote basic unit, phase adjustment on the downlink signal sent by the base station interface unit. The multiple remote basic units each are configured to receive the downlink signal sent by a corresponding local basic unit and to send the downlink signal. | 09-12-2013 |
| 20140003819 | CLOUD BASE STATION IN FIXED-MOBILE CONVERGED ACCESS NETWORK AND OPERATION METHOD THEREOF | 01-02-2014 |
| 20140072308 | Circuit Architecture and System for Implantable Multi-Function and Multi-Analyte Biosensing Device - An implantable bio-sensing platform architecture that enables the wireless selection, calibration and reading of multiple sensors, as well as checking the power levels of the solar powering source energizing various electronic and optoelectronic devices and circuits embedded in the platform. It also permits checking the operation of the potentiostats interfacing with each amperometric analyte sensor. The platform is flexible to include FET based sensors for protein sensing as well as other applications including pH sensing. In addition, other physiological sensors can be integrated in the platform. | 03-13-2014 |
| 20140126911 | METHODS AND APPARATUS FOR COMMUNICATING INFORMATION USING VISIBLE LIGHT SIGNALS AND/OR RADIO SIGNALS - A user equipment (UE) device includes a VLC receiver including a photodiode and a radio receiver. The UE device supports a plurality of alternative technologies, communications protocols, and/or frequencies. During a first mode of operation, e.g., a discovery mode, a low reverse bias voltage value is applied to the photodiode. The low reverse bias voltage is adequate to support the recovery of small amounts of communicated information, and the power consumed by the battery of the UE device is relatively low. During discovery, information communicated includes, e.g., a light transmitter ID, an access point ID, services available at the access point, configuration information for a light receiver and/or for an auxiliary radio receiver. During a second mode of operation, e.g., a data traffic mode, the reverse bias voltage applied to the photodiode is set to a high reverse bias voltage to support higher data rate using VLC. | 05-08-2014 |
| 20140169794 | DISTRIBUTED ANTENNA SYSTEM AND METHOD - A system for the distribution of radio-frequency signals includes a main unit associated with a first radio communication set, a remote unit associated with a second radio communication set installed in a preset area, for radio coverage of the area, and a communication channel associated with the main and remote units, wherein the main unit and remote units have analogue modulation elements of signals to be sent on the communication channel. The remote unit includes a selective amplification unit associated with the second radio communication set and having analogue/digital conversion elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set, digital filtering elements of digital signals coming out of the analogue/digital conversion elements and amplification elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set. | 06-19-2014 |
| 20150326336 | SYSTEM HAVING PLASTIC WAVEGUIDES - The present disclosure relates to a system having a plurality of electronic devices interconnected by way of dielectric waveguides. In some embodiments, the system has a plurality of electronic devices respectively including a data element and a multiplexing element. The data element has a plurality of electronic device terminals that output and receive data. The multiplexing element provides the data output from the plurality of electronic device terminals to a transceiver element, which generates a wireless signal that transmits the data in a manner that distinctly identifies data from different electronic device terminals. A plurality of dielectric waveguides are disposed at locations between the plurality of electronic devices. The plurality of dielectric waveguides convey the wireless signal between the plurality of electronic devices. By interconnecting electronic devices using dielectric waveguides, disadvantages associates with metal interconnect wires can be mitigated. | 11-12-2015 |
| 20160128085 | Channel Mapping for an Aggregated Touchless Wireless Fronthaul - A method implemented by a wireless fronthaul unit, the method comprises aggregating a plurality of first wireless channel signals to produce a first aggregated signal via digital frequency-domain mapping (FDM), wherein the first wireless channel signals are positioned in the first aggregated signal in non-overlapping first frequency bands, each non-overlapping first frequency band having a first bandwidth and a center frequency, wherein each respective center frequency is an odd integer multiple of a lowest center frequency, converting the first aggregated signal into a first modulated signal, and transmitting the first modulated signal to a wireless fronthaul link. | 05-05-2016 |
| 20160204861 | NETWORK OF EXTREMELY HIGH BURST RATE OPTICAL DOWNLINKS | 07-14-2016 |
