Matches 101 - 150 out of 287 < 1 2 3 4 5 6 >
Match Document Document Title
7346098 Communication receiver  
A timing and carrier error detector module ( 127 ) of a communication receiver ( 111 ). The timing and carrier error detector module uses phase information of a correlated signal (e.g. a Barker...
7340230 Receiver architectures utilizing coarse analog tuning and associated methods  
Receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as a set-top box signal spectrum...
7340001 Multidimensional signal modulation and/or demodulation for data communications  
Systems and methods are described for multidimensional signal modulation and/or demodulation for data communications. A method includes modulating a carrier signal in a first domain selected from...
7339976 Method and apparatus for reducing power consumption within a wireless receiver  
A method and apparatus for reducing power consumption within a wireless receiver is provided herein. Particularly, the use of partial chip sequence correlation to reduce the average power...
7327780 Wireless communications systems and methods for multiple operating system multiple user detection  
The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One...
7324582 System and method for the directional reception and despreading of direct-sequence spread-spectrum signals  
A system ( 100 ) and method for the reception and despreading of a code-division multiple access (CDMA) global positioning system (GPS) signal ( 200 ), or other direct-sequence spread-spectrum...
7324606 Computationally efficient system and method for channel estimation  
A system and method is provided for determining a channel estimate utilizing partial channel estimates to provide an aggregated channel estimate. A partial channel estimate is determined upon...
7321645 Method and arrangement for detecting a random access channel preamble using multiple antenna reception in a communication system  
In a method and arrangement for detecting a random access channel preamble in a received uplink signal, the uplink signal is received at one or more receive antennas and contains data related to a...
7317747 Transmitter and receiver  
A receiver informs a delay profile and CIR measured in an FDE or a Rake receiver, together with a bit error rate of a received signal that is required in a receiver, as quality information to a...
7315567 Method and apparatus for partial interference cancellation in a communication system  
A method of partial interference cancellation of a received signal that includes a first data component and a second data component is disclosed. The method includes the steps of determining a...
7308044 Technique for receiving differential multi-PAM signals  
A technique for receiving differential multi-PAM signals is disclosed. In one particular exemplary embodiment, the technique may be realized as a differential multi-PAM extractor circuit. In this...
7298772 Packet detection, symbol timing, and coarse frequency estimation in an OFDM communications system  
A integrated system for generation of packet detection, symbol timing, and coarse frequency offset for an orthogonal frequency division multiplexed (OFDM) receiver having a stream of input symbols...
7269199 Apparatus and method employing dynamic hop sequence adjustment in FHSS networks  
A frequency hopping spread spectrum apparatus and method is disclosed which mitigates interference from adjacent frequency hopping spread spectrum devices. The apparatus and method are adapted to...
7254158 Soft handoff with interference cancellation in a wireless frequency hopping communication system  
Techniques are provided to support soft handoff in a frequency hopping OFDMA system. Each sector concurrently supports “non-handoff” users and “soft-handoff” users. A non-handoff user...
7248627 Method and apparatus for estimating the link quality of a communication channel  
A link quality estimating method and apparatus adopts a fading value to modify an estimated link quality of a channel thereby obtaining a measure being very close to the real link quality. The...
7245681 Receiving terminal, receiver and receiving method for CDMA system  
A receiving terminal for CDMA system for receiving received signals from a plurality of signal propagation channels is disclosed. The electric field level of the received signal from each signal...
7239658 Coherent demodulation of hopped MSK waveforms system and method  
A method of demodulating a frequency hopped waveform is disclosed. The method comprises receiving an analog radio frequency signal, converting the analog signal to a digital pulse signal, and...
7236511 Structured adaptive frequency hopping  
The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method ( 100 ) includes the acts of sampling a plurality of channels in a...
7224713 Telemetry system with authentication  
A telemetry system includes many radio transmitters using frequency hopping carriers to intermittently transmit transmissions indicative of status of sensors associated with the transmitters. The...
7206336 Method of increasing noise immunity during reception of signals from satellite navigational systems  
Errors are reduced when tracing PRNS code delay, especially in receivers operating on signals with rather low code frequency (C/A code) under multibeam effect without deterioration or with minimum...
7194017 Virtual cell mapping in macrodiverse wireless networks with frequency hopping  
A communication system for communication with mobile stations through a plurality of base stations at macrodiverse locations and with frequency hopping (FH). Two or more adjacent base stations...
7187730 Method and apparatus for predicting CCK subsymbols  
An apparatus and a method for symbol decoding of baseband data in a wireless communications network is disclosed, and specifically CCK subsymbol prediction and symbol demodulation that occurs at...
7187708 Data buffer structure for physical and transport channels in a CDMA system  
A buffer structure for storing symbols received via a number of (e.g., physical or transport) channels. Each channel is associated with a particular time interval (e.g., a radio frame period or a...
7177344 Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving implicit waveform subtraction  
The invention provides improved CDMA, WCDMA (UTMS) or other spread spectrum communication systems of the type that processes one or more spread-spectrum waveforms, each representative of a waveform...
7173973 Multiple-antenna partially coherent constellations for multi-carrier systems  
A multi-level space time signal constellation that is optimized for use with a multi-carrier, multi-path communication scheme includes points on a first level separated from points on a mutually...
7167694 Integrated multi-tuner satellite receiver architecture and associated method  
Multi-tuner receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as transponder channels...
7149264 CDMA pilot assisted channel estimation  
A pilot assisted channel estimation process. A receiver may be configured to estimate the impulse response of a channel from a signal having pilot tones and spread-spectrum pilot signals. The...
7149253 Wireless communication  
A frequency division multiplexing wireless transmission on two or more antennas with the set of symbols on subcarriers of a burst transmitted by one antenna transformed into another set of symbols...
7130352 Transceiver apparatus and transceiving method in communication system  
Disclosed is a communication system in which it is possible to detect a TFI (Transport Format Indicator) even if a TFCI (Transport Format Combination Indicator) cannot be decoded correctly. The...
7120190 Low power RC clocking system for wireless communications  
A low-power sleep mode of operation for a frequency hopping radio receiver is presented. Digital circuits within the receiver operate based upon a high frequency clock source. During sleep mode,...
7116699 Frequency re-mapping for structure adaptive frequency hopping  
The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method ( 400 ) includes the acts of generating windows ( 410 ), sampling an...
7103026 Use of chip repetition to produce a flexible bandwidth DS-CDMA system  
A method is disclosed for obtaining a spreading code set for a code division multiple access (CDMA) communications system. The method includes (a) generating a P′×P′ spreading code set where...
7099691 Mobile radio terminal apparatus  
A control unit controls a 1x RAKE receiving unit to intermittently receive a paging signal transmitted from a first base station in a first cycle, in the first cycle. The control unit also controls...
7082174 Method and apparatus for processing a modulated signal using an equalizer and a rake receiver  
In a method for achieving higher S/N, one or more signals are received and processed to provide one or more streams of samples. In a first processing scheme, the sample stream(s) are equalized and...
7068703 Frequency hop sequences for multi-band communication systems  
Techniques to generate FH sequences having excellent correlation properties and to use these FH sequences in multi-band communication systems (e.g., OFDM systems). In one aspect, FH sequences may...
7061970 Self-synchronizing adaptive multistage receiver for wireless communication systems  
The present invention discloses an adaptive near-far resistant receiver for wireless communication systems, such as, asynchronous DS-CDMA systems, without the use of prior synchronization. The only...
7058114 Wireless device and method  
A high speed Bluetooth system with switch-to quadrature amplitude modulation allows for simple mobile devices with video data rates in applications such as Internet downloading. Mobile devices may...
7058113 Radio LAN system implementing simultaneous communication with different types of information and communication method for the same  
A radio LAN (Local Area Network) system includes an access point and a mobile or a fixed station each having a physical layer implemented by a direct spread spectrum system. The LAN system uses...
7054346 Enhanced frequency hopping in a wireless system  
A wireless endpoint employs frequency hopping for communicating signals in a wireless communications system. Over a time period T, the wireless endpoint performs pseudo-random selection of a...
7042926 Low complexity multiuser detector  
A multi-user detector for use in a CDMA receiver system includes a channel tap interpolator to generate interpolated channel taps for users of interest. The interpolated channel taps occur at...
7035317 Single-user decoder metrics for subtractive interference cancellation detectors in code-division multiple-access (CDMA) communication systems with time dependence variance residual multiple-access interference (RMAI)  
Improved branch metrics for Viterbi decoders in CDMA systems take into account the time dependency of the variance of the multiple access interference in any user's signal after the single-user...
7035315 Doppler corrected communications receiver and method of removing doppler frequency shift  
A method and communications receiver is disclosed that removes Doppler frequency shift in a spread spectrum communications signal. A pilot channel rake section has I and Q Doppler estimation...
7031271 Method of and apparatus for activating a spread-spectrum radiotelephone  
A method of activating a radiotelephone operable in a spread-spectrum multiple access radiotelephone system. A searcher receiver ( 114 ) is activated, and the searcher receiver ( 114 ) acquires a...
7027488 Spread spectrum receiver and related method  
A method and apparatus for receiving a spread spectrum signal at a mobile communications terminal, including the step of processing the signal for the purposes of signal acquisition and signal...
7020178 Microprocessor decoder frequency hopping spread spectrum communications receiver  
The present invention is directed to a frequency hopping spread spectrum transceiver. The transceiver includes a microcontroller; a transmitter having a voltage controlled oscillator, a direct...
7006557 Time tracking loop for diversity pilots  
Techniques for time tracking diversity pilots are disclosed. In one aspect, an early and a late energy calculation is made on each incoming symbol using a first pilot sequence for despreading. The...
7006555 Spectral audio encoding  
Blocks of audio are encoded based upon corresponding first and second frequencies. The first and second frequencies are hopped from block to block. An audio quality measure (AQM) is computed for...
7006583 Method and apparatus for receiving differential ultra wideband signals  
A receiver may receive ultra-wideband, spread-spectrum differential signals. In some embodiments, the receiver may use a variable bandwidth low pass filter. Lowering or raising the bandwidth of the...
6993064 Multi-user receiving method and receiver  
A receiver is provided, in which the receiver includes K signal extraction parts, a signal estimation part, K joint probability calculation parts and a multiplying part, wherein: an ith (1≦i≦K)...
6987794 Receiver and received channel estimation method for the same  
A receiver is provided that can shorten the time during which initial synchronization is established. When the frequency of an output signal from the PLL 12 is set to the receiving channel...
Matches 101 - 150 out of 287 < 1 2 3 4 5 6 >