Patent application number | Description | Published |
20110065382 | SCHEMES FOR THE EFFICIENT RECEPTION OF RADIO COMMUNICATIONS SIGNALS - Receiving a Wi-Fi radio signal using a Bluetooth receiver architecture. Also, adapting a Wi-Fi receiver architecture to constrain a received radio signal to less than the bandwidth of a conveyed Wi-Fi signal for subsequent processing purposes. | 03-17-2011 |
20110110470 | FRAME BOUNDARY DETECTION - A method of WLAN frame detection in a received signal, wherein the frame comprises first and second training sequences and the method comprises auto-correlating the signal with a delayed version of itself to establish a first frame boundary estimate based on behaviour of the autocorrelation result due to the inclusion of the first training sequence in the frame, cross-correlating the signal with a copy of the second training sequence at a range of time offsets in order to generate a first cross-correlation profile, classifying the first cross-correlation profile into one of a number of categories, establishing a second frame boundary estimate from the first cross-correlation profile in a manner dependent upon the category assigned to the first cross-correlation profile and determining a refined frame boundary estimate on the basis of a consideration of the first and second frame boundary estimates. Apparatus for performing the method is also described. | 05-12-2011 |
20110235760 | EFFICIENT OFDM PEAK REDUCTION ALGORITHM - An efficient method of OFDM peak reduction is described. In an embodiment, a set of the most significant peaks in a symbol of an OFDM signal are identified and then, for each identified peak, a shifted and scaled version of a template cancellation signal is subtracted from the OFDM signal. The template cancellation signal is shifted such that its peak aligns with the identified peak and it is scaled such that it has the opposite phase to the identified peak. No iterative peak search and cancellation is involved in peak reduction, i.e. a cancellation step is not followed by another peak search for the same OFDM symbol. The process is repeated for each symbol in turn and in some embodiments the OFDM signal is up-sampled before it is analyzed to identify the most significant peaks. | 09-29-2011 |
20110305304 | Signal Reception - A method of receiving a demodulated waveform according to a protocol in which the waveform represents a block of transmitted bits comprising a first group of bits and a second group of bits, the second group of bits being a function of the first group of bits, the method comprising: sampling the demodulated waveform to recover a first group of sample values corresponding to the first group of transmitted bits and a second group of sample values corresponding to the second group of transmitted bits; assigning bit values to reliable sample values of the first group of sample values; generating a set of candidates for a block of bits corresponding to the demodulated waveform, each candidate comprising a first group of candidate bits and a second group of candidate bits, the first group of candidate bits being generated using the assigned bit values and a combination of bit values unique to that candidate in the set of candidates, and the second group of candidate bits being generated by applying the said function to the first group of candidate bits; performing a correlation operation by determining a correlation between each candidate and the recovered first and second groups of sample values to form a correlation value associated with each candidate; and selecting the candidate associated with the correlation value that is indicative of the strongest degree of correlation between a candidate and the first and second groups of sample values to be the block of bits corresponding to the demodulated waveform. | 12-15-2011 |
20120121037 | Apparatus and Method of Reducing Noise For Frequency Modulated Signals - Apparatus for reducing FM click noise on a demodulated FM signal, the apparatus comprising, filter means configured to produce a click detection signal according to the demodulated FM signal, click detection means configured to receive the click detection signal and produce a click occurrence signal, and click correction means configured to correct FM clicks on the de-modulated FM signal according to the click occurrence signal. | 05-17-2012 |
20120224699 | FM RECEIVER NOISE REDUCTION - Apparatus to reduce noise in a stereo FM broadcast received via an antenna, the apparatus comprising: a frequency translator configured to translate the received stereo FM broadcast to an intermediate carrier frequency, a demodulation unit configured to demodulate the translated FM signal so as to form left-plus-right and left-minus-right AM signals, a filter configured to form a filtered signal by filtering one of the AM signals, so as to suppress a sub-band of that signal containing unwanted tones, a summing unit for summing the filtered signal and the other of the left-plus-right and left-minus-right signals to produce a stereo audio signal. | 09-06-2012 |
20120314788 | QUANTIZATION METHOD FOR OFDM - A quantization method for OFDM is described. In an embodiment, the method uses an objective function which is defined as a function of the quantization error of the OFDM signal in frequency summed over data subcarriers. A search algorithm is used to optimize the objective function and the solution found is quantized by rounding. The quantized value of the solution may then be fed back into the objective function to compute a value of that function and if the value is less than the value computed in a previous iteration of the method, the method is repeated using the quantized value of the solution as the new starting point for the search algorithm. If the value of the function is, however, not less than the value computed in a previous iteration, the new solution is discarded and the quantized value of the solution from the previous iteration is output. | 12-13-2012 |
20130010884 | MULTIPLE-INPUT, MULTIPLE-OUTPUT TELECOMMUNICATIONS SCHEMES - This disclosure concerns beam-forming vectors and beam-forming matrices for multiple-input, multiple-output (MIMO) communications systems. These systems, from the method perspective, provide, according to one embodiment, a method of feeding back, to a transmitter from a receiver in a MIMO communications system, at least part of a beam-forming vector of a beam-forming matrix, wherein: the vector relates to a spatial stream of the MIMO system; the vector comprises a series of elements; each element specifies a beam-forming weight for a respective transmit antenna of the transmitter; and the method comprises: calculating a scaling factor that would scale a first element of the vector to a value of one; scaling the other element or elements of the vector with the scaling factor; and feeding back the scaled other element or elements to the transmitter to inform a beam-forming process. These systems, from the method perspective, provide, according to another embodiment, a method of processing a beam-forming matrix, wherein: the beam-forming matrix is for adjusting signals that are to issue from the transmit antennae of a MIMO communications system; the MIMO communications system comprises a transmitter and a receiver; the beam-forming matrix is capable of being decomposed into a series of beam-forming vectors; each beam-forming vector relates to a spatial stream of the MIMO system; each beam-forming vector comprises a series of elements; each element specifies a beam-forming weight for a transmit antenna of the transmitter; and the method comprises: obtaining a beam-forming matrix in which the elements are quantised; and orthogonalising the beam-forming vectors with respect to one another. | 01-10-2013 |
20130028092 | DATA FLOW CONTROL - A communication device capable of receiving data from a transmitting device via a communications link, the communication device comprising a buffer and being capable of generating, in dependence on the capacity of the buffer to accommodate data received over the communications link, information for inducing the transmitting device to change its data transmission rate, wherein the information imitates a change in a capability of the communication device to receive data via the communications link. | 01-31-2013 |
20130077706 | TRANSMITTER - The present application relates to a method for reducing the peak-to-mean amplitude ratio of a transmission signal comprising a plurality of coherent replicated signals, and to a transmitted for transmitting such a signal. The transmission signal is separated into the plurality of coherent replicated signals and one of the plurality of replicated signals is delayed with respect to another of the plurality of replicated signals, either in the time domain by introducing a time delay or in the frequency domain by introducing a phase shift. This has the effect of reducing the coherence of the delayed replicated signal with respect to the other replicated signal, reducing the peak power of the signal and therefore reducing the peak-to-mean amplitude ratio of the transmission signal. | 03-28-2013 |
20130182652 | METHODS AND APPARATUS IN A WIRELESS NETWORK - Methods and apparatus are described for a wireless local area network. In order to improve network throughput for networks with a high number of stations and with wide network coverage, stations are divided into groups, with wireless resources for communications between access points and stations divided and allocated on a group-by-group basis. The stations are then able to compete for usage of the resources allocated to their respective group(s). | 07-18-2013 |
20150043555 | UNIFIED DEVICE FOR ADJACENT AND NON-ADJACENT CHANNELS FOR PROCESSING PHYSICAL LAYER PROTOCOL DATA UNITS - A unified device for adjacent and non-adjacent channels/carriers for processing Physical layer Protocol Data Units (PPDUs) includes a dual-use configuration capable of processing either 80+80 Megahertz (MHz) PPDUs with a single spatial stream (160/80+80 MHz 1×1) or 80 MHz PPDUs with two spatial streams (80 MHz 2×2). | 02-12-2015 |
Patent application number | Description | Published |
20100105421 | POWER CONTROL METHOD - Improved power control methods and power control systems are described wherein received RSSI values are processed to generate a power control signal which may be used by a link manager, or other element in a receiving station, to determine whether to send a power control message to the transmitting station. The method used to process the received RSSI values is dependent upon a value of the power measurement, for example, the method may involve a comparison between the value of the power measurement and a value of the power control signal. In another embodiment, the received RSSI values may be converted to power values and then smoothed using a filter. | 04-29-2010 |
20100151807 | FM SIGNAL QUALITY MEASUREMENT - A signal quality estimator for estimating the quality of signal reception in a signal receiver, the signal quality estimator comprising: a first filter for filtering a signal received by the receiver to isolate a frequency band therein; and a signal analyzer for forming an indication of the degree to which the amplitude of the signal in that frequency band varies over time, to serve as an estimate of the quality of signal reception in the receiver. | 06-17-2010 |
20100219876 | FM Tone Rejection - An interference rejection unit for at least partially rejecting a narrowband interferer from an input signal, the unit comprising: an interferer detector for detecting the phase of an interferer in the input signal; a signal generator for generating a cancellation signal in dependence on the phase detected by the interferer detector; and a signal combiner for combining the input signal with the tone cancellation signal to generate an output signal in which the interferer is at least partially cancelled from the input signal. | 09-02-2010 |
20130177056 | Enhancing Channel Estimates Made in Digital Communications Receivers - Schemes for combining channel-estimates from different OFDM frames after compensating for changes in receiver-transmitter characteristics. | 07-11-2013 |
20140078958 | SCHEMES FOR DETECTING WIRELESS NETWORKS - A station for accessing the resources of an access point in a wireless network, the station including a transmitter that is arranged to formulate probe requests and a transmit chain that is arranged to transmit probe requests on multiple channels of the access point simultaneously, wherein the probe requests are configured to elicit responses from the access point. Also disclosed is a station for accessing the resources of an access point in a wireless network, wherein the network includes a plurality of channels at different frequencies and the station includes a receiver and a receive chain arranged to deliver to the receiver a signal that has been acquired wirelessly from the network and which spans a plurality of the channels, wherein the receiver is arranged to produce a first spectrogram of the signal and to make a determination, by comparing the first spectrogram with one or more earlier spectrograms of the signal, of whether there is communication starting in the network in a channel covered by the signal. | 03-20-2014 |
Patent application number | Description | Published |
20090112375 | System and method for control of power distribution - A system for controlling a multi-feed power distribution network is described herein. The network includes a first network sector that includes a first plurality of devices connected to a first power source and a second network sector that includes a second plurality of devices connected to a second power source. The system includes a first controller and a second controller. The first controller is configured to control operation of the first network sector and exchange data with the second controller. The second controller is configured to control operation of the second network sector and exchange data with the first controller. The system is modular and it can be expanded to include additional controllers as necessary. Methods and a computer program product for controlling a multi-feed power distribution network are also described. | 04-30-2009 |
20110313586 | SYSTEM AND METHOD FOR CONTROL OF POWER DISTRIBUTION NETWORKS - A system for controlling a multi-feed power distribution network includes: a first controller configured to control operation of a first network sector, the first controller configured to, in response to a topology change in the first network sector causing a change in a location from which power is supplied to at least one affected network segment, transmit a message identifying the at least one affected network segment from the first controller to the network without prior knowledge of any other controllers; and at least one second controller configured to control operation of the at least one second network sector, the second controller configured to receive the message, exchange configuration information regarding the at least one affected segment with the first controller, and automatically update the second configuration data of the second controller based on the configuration information received from the first controller to reflect the topology change. | 12-22-2011 |
20130054042 | POWER DISTRIBUTION NETWORK FAULT MANAGEMENT - A fault interrupt device is tripped by a fault in a power distribution network. A distributed automation controller (DAC) determines a location of and isolates the fault. Power is restored upstream of the fault and downstream power requirement vs. power availability from a secondary source(s) is assessed. The secondary source(s) is connected to the downstream portion if power available is sufficient or after nodes are deactivated to bring power requirements below power available. If a second fault occurs, it is also located and isolated, such as by communication between affected partition DACs of the power distribution network. | 02-28-2013 |
20130066444 | SYSTEMS AND METHODS FOR USE IN RESPONDING TO FAULTS IN A UTILITY SYSTEM - Systems and methods for use in detecting and responding to fault conditions in a utility system. A first partition controller associated with a first partition detects a fault condition within the first partition. The first partition controller transmits a utility capacity request to one or more partition controllers other than the first partition controller. A second partition controller associated with a second partition receives the utility capacity request and determines an available utility capacity of the second partition. The second partition controller transmits a utility capacity response that includes the available utility capacity to the first partition controller. A utility connection is activated between the first partition and the second partition based on the available utility capacity. | 03-14-2013 |
Patent application number | Description | Published |
20150019197 | DATABASE MODELING AND ANALYSIS - A method of modeling a prospective database migration between database systems may include collecting performance data associated with a plurality databases in a first database system. The method may also include receiving a selection of a set of databases in the plurality of databases to migrate to a second database system. The method may additionally include computing, using at least some of the performance data, combined performance data that estimates how the set of databases will perform on the second database system. The method may further include providing one or more indications as to whether the set of databases should be migrated to the second database system. In some embodiments, the one or more indications may be based on the combined performance data. | 01-15-2015 |
20150019488 | AUTOMATED DATABASE MIGRATION ARCHITECTURE - A method of migrating data from one or more source databases to one or more target databases may include generating a pre-migration analysis for a plurality of objects stored in the one or more source databases, and generating a plurality of migration scripts that transfer the plurality of objects from the one or more source databases to the one or more target databases. The method may also include generating a migration plan that defines an execution order for the plurality of migration scripts, and migrating the plurality of objects from the one or more source databases to one or more target databases according to the migration plan. The method may further include validating the plurality of objects on the one or more target databases. | 01-15-2015 |
20150019707 | CLOUD SERVICES PERFORMANCE TUNING AND BENCHMARKING - Embodiments of the invention provide systems and methods for providing services related to managing computer systems. More specifically, embodiments of the present invention provide for providing performance tuning and benchmarking services to remote computer systems. Generally speaking, the service can provide functions to help customers maintain a consistent performance of their databases with minimal downtime by pro-actively addressing issues or bottlenecks with periodic assessments, monitoring of performance metrics that are causing stress throughout the term of the service, reporting violations of agreed upon thresholds for performance, and reactively helping customers address performance issues that arise with reactive tuning | 01-15-2015 |
Patent application number | Description | Published |
20080228941 | Ethernet Link Monitoring Channel - The invention provides a method for utilizing the Inter Packet Gaps (IPGs) to create an Extended Link Monitoring Channel in a physical layer transceiver for a 10 Gb/s Ethernet link for communicating link related information, thus providing an extensive link maintenance capability. A corresponding transceiver between an Ethernet media access control (MAC) layer device and a 10 Gb/s Ethernet link, comprising a physical coding sublayer (PCS) extension circuit for implementing the Extended Link Monitoring Channel is also provided. | 09-18-2008 |
20120017118 | METHOD AND APPARATUS FOR TESTING AN INTEGRATED CIRCUIT INCLUDING AN I/O INTERFACE - Methods and apparatus provide for testing an integrated circuit including an input/output (I/O) interface. The method and apparatus place the I/O interface in a test mode by test enabling logic. During the test mode, the method and apparatus also provide, by a clock generator in the I/O interface, an internal phase-aligned receiver clock signal to a plurality of transceivers in the I/O interface. The clock generator is a transmitter portion of one of the plurality of transceivers in the I/O interface. The method and apparatus then monitor for errors in loopback data from the plurality of transceivers in the I/O interface by an automatic test equipment (ATE). The phase of the internal phase-aligned receiver clock signal is aligned with the loopback data of the plurality of transceivers, and the frequency of the internal phase-aligned receiver clock signal may be above about 200 MHz. | 01-19-2012 |
20140049292 | INTEGRATED CIRCUIT PACKAGE HAVING MEDIUM-INDEPENDENT SIGNALING INTERFACE COUPLED TO CONNECTOR ASSEMBLY - An integrated circuit (IC) package includes electrical contacts disposed at a first surface of the IC package, an integrated circuit implementing an electrical signaling interface, and a connector assembly accessible at a second surface of the IC package. The connector assembly is to mechanically attach to another connector assembly and includes contact terminals electrically coupled to the electrical signaling interface. The connector assembly can be configured to provide friction coupling with the other connector assembly to permit the other connector assembly to be removably attached. A system includes the IC package and an external transceiver module having a connector assembly mechanically attached to the connector assembly of the IC package. The electrical signaling interface conducts signaling with the external transceiver module in accordance with one signal format and the external transceiver module conducts signaling over a transmission medium in accordance with another signal format. | 02-20-2014 |