| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455059000 | Single message via plural carrier wave transmission | 12 |
| 20080220723 | COHERENT INITIAL ACQUISITION - An acquisition module includes a coherent correlator configured to receive a transmission having a pilot signal and correlate the received transmission with a local copy of the pilot signal to produce a first output, a delayed correlator configured to delay the first output and correlate the first output with the delayed first output to produce a second output, and a detector configured to detect the pilot signal in the transmission based on the second output. | 09-11-2008 |
| 20090004970 | System and method of communicating multiple carrier waves - A system and method for communicating a plurality of carrier waves that are received by a single receiver system is provided. The receiver system includes at least one antenna, at least one splitter, a plurality of tuners, and at least one combiner. The antenna receives a plurality of carrier waves. The splitter is in communication with the antenna, and splits the plurality of carrier waves. The plurality of tuners are in communication with the at least one splitter, and the split carrier waves are communicated to a separate tuner. The at least one combiner is in communication with the plurality of tuners, and combines an output of the plurality of tuners to generate an output based upon at least a portion of the received plurality of carrier waves. | 01-01-2009 |
| 20090068951 | Spectrum-Blind Sampling And Reconstruction Of Multi-Band Signals - A signal processing method includes sampling an analog signal, which has a spectral density defining one or more bands, to produce a digitized signal. A spectral transform of the digitized signal is expressed as a matrix multiplied by a vector, wherein the vector includes multiple elements that represent the spectral density of the analog signal as a function of frequency within respective spectral slices. Indices of a subset of the elements of the vector, in which the spectral density is concentrated, is determined. The analog signal is reconstructed from the digitized signal using the subset of the elements of the vector and a corresponding subset of columns of the matrix having the indices. | 03-12-2009 |
| 20090075595 | High-Speed System Having Compensation for Distortion in a Digital to-Analog Converter - A method and system for the design and implementation of an inverse-sinc function that can efficiently process signals produced by high-speed systems is presented. An integrated inverse-sinc module accepts multiple data streams that may result from parallel sub-systems and creates multiple outputs that can be interleaved to produce a sequence that has been filtered by an inverse-sinc function. The multiple-input, multiple-output system may be beneficially operated at a low data rate, such as the data rate used by each of the sub-systems. | 03-19-2009 |
| 20090124204 | Minimum Finger Low-Power Demodulator For Wireless Communication - Techniques for assigning multipaths to finger processors to achieve the desired data performance and low power consumption are described. A search is initially performed to obtain a set of multipaths for a transmission from at least one base station. At least one multipath (e.g., the minimum number of multipaths) having a combined performance metric (e.g., a combined SNR) exceeding a threshold is identified. The at least one multipath is assigned to, and processed by, at least one finger processor to recover the transmission from the base station(s). | 05-14-2009 |
| 20090209206 | OPTIMAL MIMO ISI CHANNEL ESTIMATION USING LOOSELY SYNCHRONIZED CODES AND THEIR VARIATIONS - A training-based channel estimation technique is provided to estimate channel state information for MIMO systems that is highly energy efficient and optimal in terms of Cramér-Rao lower bound (CRLB). The technique employs loosely synchronized (LS) codes or shifted LS codes. The codes can be generated using a fast Golay correlator and an efficient Golay correlator. A low-complexity implementation is also provided. | 08-20-2009 |
| 20100029209 | SYSTEM, METHOD, AND COMPUTER SOFTWARE CODE FOR PROVIDING AN AUXILIARY COMMUNICATION PATH WHEN A PRIMARY COMMUNICATION PATH IS UNAVAILABLE - A method for communicating on a train that has at least two locomotives, the method including determining when a primary communication path ceases to be available for a specific subsystem of the train, identifying at least one auxiliary communication path to transmit information for the specific subsystem, configuring a message for the specific subsystem which complies with a message format of the at least one auxiliary communication path, and transmitting the message on the at least one auxiliary communication path. A system and a computer software code are further disclosed for providing a communication system for a powered system. | 02-04-2010 |
| 20100248630 | MULTI-CHANNEL MANAGEMENT AND LOAD BALANCING - Certain aspects of the present disclosure provide a protocol to allow for load balancing between multiple frequency channels in a wireless communications system. | 09-30-2010 |
| 20110053512 | BROADBAND WIRELESS COMMUNICATIONS SYSTEMS AND METHODS USING MULTIPLE NON-CONTIGUOUS FREQUENCY BANDS/SEGMENTS - Wireless communications transceivers include a transmitter that is configured to selectively frequency shift and transmit portions of broadband information over multiple non-contiguous narrowband frequency bands/segments, each of which is too narrow to carry the broadband information. A receiver also is configured to receive and selectively frequency shift portions of broadband information from multiple non-contiguous narrowband frequency bands/segments, each of which is too narrow to carry the second broadband information. Broadband information thereby may be transmitted and received in a regulated communications environment, even though a given provider may only be assigned discontinuous frequency bands/segments, none of which is wide enough to carry the entire broadband information. | 03-03-2011 |
| 20110076953 | Method and apparatus for multiple accesses to a communications channel - A method and apparatus for increasing user capacity in a multi-user communication system. The method comprises transmitting a signal multiple times in the communication system with a predetermined delay between each retransmission. A receiver receives the signals and makes multiple delayed copies of the signal which are then summed. A second signal is then transmitted multiple times in the communication system with a different delay time between each retransmission than the first signal, and then received by a receiver which makes multiple delayed copies of this second signal which are then summed and decoded. This process is then used on subsequent signals in the communication system. | 03-31-2011 |
| 20110105032 | CONTROL METHOD OF WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION SYSTEM, TRANSMITTING APPARATUS, AND RECEIVING APPARATUS - A channel response matrix is obtained by performing a training process between a transmitter | 05-05-2011 |
| 20150381213 | APPARATUS AND METHODS OF ACCESSING ALL CHANNELS OF A SUPERHETERODYNE RECEIVER SIMULTANEOUSLY - An apparatus and method associated with exploiting a characteristic in super-heterodyne receivers such that a modulated signal will be received on all channels simultaneously regardless of the channel selected on the receiver. | 12-31-2015 |
