| Patent application number | Description | Published |
|---|
| 20080310564 | Processing data in a digital communications system - A method of processing a signal in a wireless digital communications system, wherein a source of disturbance affects differently at least first and second portions of a received signal carrying user data and/or control data, the method comprising: identifying the second portion of the received signal, most affected by the source of disturbance; generating a first estimate of the disturbance (P | 12-18-2008 |
| 20090110036 | Processing Digital Samples in a Wireless Receiver - A method of processing digital samples of a signal received at a receiver of a wireless communication system includes monitoring channel conditions and generating a channel indicator including at least one channel parameter by performing at least one of: estimating a channel mobility parameter and comparing it with a threshold; estimating a channel parameter of the energy of the channel outside a predefined temporal window, and comparing it with a threshold; estimating a channel temporal duration parameter and establishing if it meets predetermined criteria; estimating a channel-zero location parameter and establishing if it meets predetermined criteria; estimating a received-signal signal-to-disturbance power ratio, and comparing it to a threshold; estimating an estimated-channel-response signal-to-disturbance power ratio; estimating the degree of non-stationarity of the disturbance at the receiver input; and selecting one of a plurality of processing routines for processing the digital samples based on said channel indicator. Related receivers are also described. | 04-30-2009 |
| 20090110048 | Radio Receiver in a Wireless Communications System - Techniques are described for optimizing the processing facilities of a receiver in a wireless communication environment, taking into account processing performance set against the computing resources and/or power consumption required to obtain that processing performance. A radio receiver for a wireless communications system can include channel equalization means arranged to receive samples of an incoming signal and to generate an equalized output, said channel equalization means including means for processing said digital samples in accordance with an equalizer algorithm. The receiver includes means for estimating parameters of a channel over which the incoming signal has been transmitted. The receiver can also include means for selecting from a plurality of equalizer algorithms an equalizer algorithm for execution by the processing means based on at least one said estimated channel parameter. Related methods and algorithms are described. Related computer program products are also described. | 04-30-2009 |
| 20090110049 | Radio Receiver in a Wireless Communications System - Techniques are described for optimizing processing facilities of a receiver in a wireless communication environment, taking into consideration processing performance set against the computing resources and/or power consumption required to obtain the processing performance. An embodiment of a radio receiver is described that includes a channel equalization means arranged to receive digital samples of an incoming signal and to generate an equalized output, said channel equalization means including means for processing said digital samples in accordance with an equalizer algorithm utilizing a set of equalizer parameters. The receiver can include means for estimating at least one parameter of a channel over which the signal has been received, and means for selecting at least one of said equalizer parameters based on at least one of said estimated channel parameters. Related methods, algorithms, and computer program products are also described. | 04-30-2009 |
| 20090111413 | Processing Signals in a Wireless Communications Environment - Methods are described of processing a signal transmitted over a channel in a wireless communication system. A method includes estimating at intervals at least one parameter of a time varying communication environment of said system. At least one processor-related signal processing criterion can be monitored for implementing a signal processing activity. Based on said at least one parameter and said at least one processor-related criterion, a signal processing function can be selected from a plurality of signal processing functions implementable by a processor. Each signal processing function includes a plurality of code blocks having a sequence of instructions for execution on a processor platform, the processor platform including a set of configurable operators having a plurality of predetermined configurations, each sequence of instructions including at least one configuration instruction, which selects one of the plurality of predefined configurations for executing that code block. Related receivers and software implementations are described. | 04-30-2009 |
| 20090111461 | Synchronous CDMA Communication System - Methods are described of processing signals received over a wireless communication channel by a receiver in a wireless cellular network. A method includes receiving a sequence of signal samples. The received sequence of samples can be used to estimate at least one channel coefficient for at least one transmission path. An estimate of an orthogonality factor can be generated based on said at least one channel coefficient. An estimate of the disturbance can be generated based on said at least one estimated channel coefficient. An estimate of input signal power can be generated using the received sequence. An estimate of cell geometry can be generated using the estimated orthogonality factor, estimated disturbance, and estimated input signal power. The estimate of cell geometry can be used in processing received data samples. Related methods of processing digital samples are described. Related receivers are also described. | 04-30-2009 |
| 20090111542 | Wireless Receiver with Receive Diversity - Wireless receivers are described for receiving signals from a transmitter. A receiver can include a plurality of antennas each for receiving a version of a signal via a different propagation channel and providing that version to a respective input. Signal processing means can be included and configured to operate diversity processing of a supplied number of said inputs for use in performing detection of said signal. The receiver can include channel parameter estimation means, configured to estimate one or more channel parameters on the propagation channels. The receiver can also include selection means configured to select only a subset of said inputs to implement a specific dimensionality of the receiver diversity processing, in dependence on the one or more channel parameters indicative of channel conditions on said propagation channels. The diversity processing can be linear or non-linear. Related methods and software implementations and computer program products are also described. | 04-30-2009 |
| 20090113429 | Processing Signals in a Wireless Network - Systems are described that reduce or obviate the impact of limited processing resources and/or limit the power consumption in a receiver having signal processing functions at least partially implemented in software. A wireless receiver includes reception means for receiving a signal over a wireless channel in a wireless external environment. The receiver includes storage means, and a processor configured to perform a plurality of signal processing functions for extracting processed data from said signal, each of said signal processing functions having a plurality of alternative software implementations requiring different levels of usage of a processing resource. The processor estimates at least one parameter relating to the external environment and selects and executes one of the software alternatives for each of the respective signal processing functions to apply a set of implementations adapted to a required quality of said processed data. Related methods and computer program products are described. | 04-30-2009 |
| 20100296553 | PROCESSING DIGITAL SAMPLES IN A WIRELESS RECEIVER - A method of processing digital samples of a signal received at a receiver of a wireless communication system includes monitoring channel conditions and generating a channel indicator including at least one channel parameter by performing at least one of: estimating a channel mobility parameter and comparing it with a threshold; estimating a channel parameter of the energy of the channel outside a predefined temporal window and comparing it with a threshold; estimating a channel temporal duration parameter and establishing if it meets predetermined criteria; estimating a channel-zero location parameter and establishing if it meets predetermined criteria; estimating a received-signal signal-to-disturbance power ratio and comparing it to a threshold; estimating an estimated-channel-response signal-to-disturbance power ratio; estimating the degree of non-stationarity of the disturbance at the receiver input; and selecting one of a plurality of processing routines for processing the digital samples based on said channel indicator. Related receivers are also described. | 11-25-2010 |
| 20110032837 | SYNCHRONOUS CDMA COMMUNICATION SYSTEM - In one aspect, there is provided a method of processing a signal received using a wireless communication channel by a receiver in a wireless cellular network. In one embodiment, the method comprises receiving signal samples of a signal to be processed from a serving cell, identifying a second of dominant interfering cells generating an interfering signal, using a number of cells in the set to select an interference scenario, and using the selected interference scenario and at least one parameter related to the serving cell and the interfering cells to select a processing function for processing the signal. | 02-10-2011 |
| 20110105171 | REPORTING CHANNEL QUALITY INFORMATION - The present invention relates to a method of transmitting channel quality data for channels in a wireless communication system, and to a corresponding receiver and transmitter. The method comprises determining a plurality of channel quality indicators for a corresponding plurality of frequency intervals, and transmitting information about channel quality indicators in the form of differentially encoded slope data. | 05-05-2011 |
