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| Number | Title | Issue Date |
| 8149970 | Multiple input, multiple output channel, digital receiver tuner The present invention teaches a compact and highly integrated multiple-channel digital tuner and receiver architecture, suitable for widespread field deployment, wherein each receiver demodulator channel may be remotely, automatically, dynamically, and economically ... | 04/03/2012 |
| 8149971 | Multiple-branch wireless receiver A wireless receiver detects signals received at two or more antennas, with each antenna coupled to an input receive chain. A switch is employed to couple selected input receive chains to one or more corresponding output receive chains during listening, coarse-detect... | 04/03/2012 |
| 8144824 | Trend influenced time tracking A method for determining a communication channel location is disclosed. A first subset of a plurality of channel impulse responses is averaged over a first time period to produce a first filtered channel impulse response, and a second subset of the plurality of chan... | 03/27/2012 |
| 8126098 | Multi-rake receiver A wireless receiver includes M antennas that each receive a wireless signal. N rake receiver modules receive the wireless signals from the M antennas and combine multipath components of the wireless signals. A summing module receives outputs of the N rake receiver m... | 02/28/2012 |
| 8064555 | Input/output multi-level channelizer amplifier A system includes an input multi-level channelizer, an output multi-level channelizer, and more than one amplifiers connected between the input and output channelizers. The input and output channelizers cover an operating frequency band. Each level of the input mult... | 11/22/2011 |
| 8040987 | Channel estimating apparatus and method for use in a broadband wireless communication system A Channel estimating apparatus and method for use in a broadband wireless communication system are provided. The receiving method includes determining a control unit for a channel estimation using burst allocation information of selected sectors; extracting pilot sy... | 10/18/2011 |
| 8027419 | Method for alignment of analog and digital audio in a hybrid radio waveform This invention provides a method of detecting time alignment of an analog audio signal and a digital audio signal in a hybrid radio system. The method comprises the steps of filtering the analog audio signal to produce a filtered analog audio signal, filtering the d... | 09/27/2011 |
| 8019031 | User selection method and user selection device for multiuser MIMO communication The present invention aims to provide a user selection method which can provide a large, multiuser diversity effect with a small amount of calculation in multiuser MIMO systems, the method being a user selection method for multiuser MIMO communication, in which an o... | 09/13/2011 |
| 8000421 | Wireless communication system, wireless communication apparatus, wireless communication method, and computer program therefor Communication operation is performed with enhanced transmission efficiency by obtaining enhanced communication capacity through optimal allocation of transmission powers to individual MIMO channels obtainable by spatial multiplexing. A transmitter has a plurality of... | 08/16/2011 |
| 8000422 | Apparatus and method for detecting signal in multiple-input multiple-output (MIMO) wireless communication system Receiving apparatus and method in a Multiple-Input Multiple-Output (MIMO) wireless communication system are provided. The receiver having N-ary receive antennas includes a decomposer for decomposing a channel matrix to a matrix Q and a matrix R through a QR decompos... | 08/16/2011 |
| 7978798 | Spatial multiplexing detection apparatus and method in MIMO system Provided are a spatial multiplexing apparatus and method in a Multiple Input Multiple Output (MIMO) system. The spatial multiplexing detection method includes estimating channels of a received signal, and sorting the estimated channels in descending order according ... | 07/12/2011 |
| 7945006 | Data-driven method and apparatus for real-time mixing of multichannel signals in a media server An apparatus for mixing audio signals in a voice-over-IP teleconferencing environment comprises a preprocessor, a mixing controller, and a mixing processor. The preprocessor is divided into a media parameter estimator and a media preprocessor. The media parameter es... | 05/17/2011 |
| 7933372 | Successive interference cancellation based on the number of retransmissions A method for processing a plurality of symbol streams is provided. The method includes receiving a first symbol stream, wherein the first symbol stream has a corresponding first number of retransmissions. The method further includes receiving a second symbol stream,... | 04/26/2011 |
| 7924958 | Apparatus and method for transmitting and receiving signals in a multi-antenna system An apparatus and method for transmitting and receiving a data stream in a multi-antenna system, in which a plurality of data streams are received, a plurality of code symbol sequences are generated by precoding the plurality of data streams, the code symbol sequence... | 04/12/2011 |
| 7916816 | Hardware allocation in a multi-channel communication environment Hardware allocation techniques are described for use in a multi-channel communication environment. The techniques may be used to reduce the number of gates needed for processing and/or to improve the efficiency and/or speed of a communication system. For example, re... | 03/29/2011 |
| 7826573 | Method of identifying a space-time encoded signal in a wireless communication system A method of identifying a space-time encoded signal in a wireless communication system having at least two different decoder types is disclosed. The method includes receiving at least one pilot signal from a transmitting end, wherein the pilot signal is represented ... | 11/02/2010 |
| 7826574 | Multi-mode receiver with adaptive mode selection Receivers and methods are provided that include multiple modes of processing signals from multiple antennas. These include legacy, SAIC (single antenna interference cancellation) and MSRD. Various methods are provided for selecting an appropriate receiver processing... | 11/02/2010 |
| 7817755 | System, device and method for generating a logarithmic function according to a plurality of communication signals The present invention discloses a log function generator module device that is adapted to receive substantially simultaneously a plurality of signals at a plurality of respective communication links. The device includes a plurality of sets of logarithmic, a pluralit... | 10/19/2010 |
| RE41797 | Polyphase channelization system A polyphase channelizer converts an intermediate frequency wideband signal into a complex signal that is sampled by parallel analog-to-digital converters having a bank of samplers respectively clocked by staggered clocking signals for respective converters for feedi... | 10/05/2010 |
| 7778368 | Apparatus for receiving signals via channels An apparatus (1) comprising a receiver (20) for receiving signals via channels defined by a channel transfer matrix H and a transmitter (10) is provided with a channel estimator (30) for generating first and second channel estimation info... | 08/17/2010 |
| 7751513 | Signal processing method, particularly in a radio-frequency receiver, and signal conditioning circuit A first signal path having an amplifier and a second signal path having an amplifier with adjustable gain factor are provided. A signal applied to the first and second signal paths is amplified and demodulated on the first signal path. Concurrently, the signal is am... | 07/06/2010 |
| 7746969 | High definition multi-media interface A receiver for a multi-channel system such as a HDMI system is presented. In accordance with the present invention, the receiver receives one of the plurality of channels and includes an analog portion, a digital-to-analog converter, and a digital control block that... | 06/29/2010 |
| 7738609 | Multipath compensation for signal receivers This invention provides a signal synchronizer that is capable of minimizing the effects of multi-path reception. The signal synchronizer provides signal samples from a first signal source and a second signal source for generating an output signal. The signal synchro... | 06/15/2010 |
| 7720185 | Narrow-band interference canceller The disclosure is directed to a receiver. The receiver includes an interference canceller configured to filter digital samples produced from a modulated signal transmitted over a wireless channel, and a digital variable gain amplifier (DVGA) configured to amplify th... | 05/18/2010 |
| 7706485 | Radio interference indicator The present invention provides a radio interference indicator comprising a controller for processing an instruction and a radio signal receiver coupled to the controller to receive or detect a radio signal. An indicating element is coupled to the controller to indic... | 04/27/2010 |
| 7706486 | Efficient diversity combining for wideband downlink A communication system employing site diversity combing to increase link availability includes at least two receivers at receive sites within a single downlink beam separated by enough distance to provide decorrelation of weather phenomena—such as rain fade outage... | 04/27/2010 |
| 7693242 | DC offset correction for constant envelope signals Methods (1500) and corresponding systems (400, 500) for determining and correcting a DC offset in a receiver operate to sample (1503) a signal to provide complex samples; estimate (1505) a Direct Current (DC) offset corresponding to each ... | 04/06/2010 |
| 7664212 | Apparatus and method for switching clocks while preventing glitches and data loss A apparatus (700) and method (600) are presented for preventing glitches and data loss in an Digital Base Band (DBB) portion (110) of an Ultra Wideband (UWB) receiver. a first and a second recovered clock (111, 112) and an external clock ... | 02/16/2010 |
| 7653163 | Systems for communicating using multiple frequency bands in a wireless network Systems that communicate in a wireless network using a first and a second frequency band are described herein. The systems may use the first frequency band to transmit or receive a control signal, enabling subsequent communication using the second frequency band. | 01/26/2010 |
| 7636407 | Signal detector used in wireless communication system A signal detector arranged in a receiver of a wireless communication device includes a variable passband bandpass filter configured to bandlimit a received signal using a variable passband; a signal parameter detection unit configured to detect a signal parameter of... | 12/22/2009 |
| 7620131 | Digital clock controller, radio receiver, and methods for use therewith A digital clock generator includes a base clock generator for generating a base clock signal at a variable base clock frequency in response to a control signal. A digital clock controller generates a digital clock signal having a substantially constant number of dig... | 11/17/2009 |
| 7613260 | Modem control using cross-polarization interference estimation A receiver includes an input circuit, which is coupled to at least one antenna so as to receive, process and digitize first and second signals, thus generating first and second streams of input samples. An interference cancellation circuit in the receiver includes f... | 11/03/2009 |
| 7593493 | Method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system In wireless systems, a method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC com... | 09/22/2009 |
| 7590203 | Joint symbol, amplitude, and rate estimator The system in one embodiment relates to tightly integrating parameter estimation, symbol hypothesis testing, decoding, and rate identification. The present invention provides Turbo-decoding for joint signal demodulation based on an iterative decoding solution that e... | 09/15/2009 |
| 7587008 | Decoding error correcting codes transmitted through multiple wire twisted pair cables with uneven noise on the wires Decoding error correcting codes transmitted through multiple wire twisted pair cables with uneven noise on the wires. A novel approach is presented by which the metrics may be calculated for signals received over multi-wire (or alternatively referred to as multi-cha... | 09/08/2009 |
| 7583769 | Operating GPS receivers in GPS-adverse environment A system for operating a GPS receiver in a GPS-adverse environment includes a plurality of GPS receivers, a plurality of remote sensor interfaces (RSIs), and a computer management system. The GPS receivers are adapted to determine positional parameters based on the ... | 09/01/2009 |
| 7580490 | Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas An apparatus and method for channel estimation using preamble signals received from a serving Node B and neighboring Node Bs each having N (≧1) transmit antennas in a UE having M (≧1) receive antennas in a broadband wireless communication system. In the channel ... | 08/25/2009 |
| 7570723 | Multiple input, multiple output channel, digital receiver tuner The present invention teaches a compact and highly integrated multiple-channel digital tuner and receiver architecture, suitable for widespread field deployment, wherein each receiver demodulator channel may be remotely, automatically, dynamically, and economically ... | 08/04/2009 |
| 7555079 | Method and corresponding arrangement for DC offset compensation using channel estimation A method of determining a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols. The method comprises providing a channel estimate of the communications channel based on said s... | 06/30/2009 |
| 7539275 | Analog to feature converter for SIGINT applications A specially constructed analog processing block ahead of the traditional ADC within a typical RF front-end involving an antenna, filter, LNA, and AGC is provided. This analog block includes a structured matrix of controllable analog delay elements together with anal... | 05/26/2009 |
