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Class Information
Number: 375/350
Name: Pulse or digital communications > Receivers > Interference or noise reduction > By filtering (e.g., digital)
Description: Subject matter wherein the noise is reduced by a frequency domain or digital sequence filter. The filter may remove interference or pass only desired signals.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7609759 Method and system of nonlinear signal processing Oct. 27, 2009
7606339 Information handling system including adaptive interference suppression feature and method of operation Oct. 20, 2009
7606293 Bidirectional turbo ISI canceller-based DSSS receiver for high-speed wireless LAN Oct. 20, 2009
7606137 Cancellation systems for multicarrier transceiver arrays Oct. 20, 2009
7602853 Method and apparatus for channel estimation Oct. 13, 2009
7602844 On-line step-size calculation using signal power estimation and tone grouping of the frequency-domain equalizer for DMT-based transceiver Oct. 13, 2009
7602835 Multi-rate spread spectrum composite code Oct. 13, 2009
7599433 Apparatus for and method of controlling a feedforward filter of an equalizer Oct. 6, 2009
7599423 Successive interference canceling for CDMA Oct. 6, 2009
7596195 Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture Sep. 29, 2009
7596190 System, method, and apparatus for correction of code doppler shift Sep. 29, 2009
7596183 Joint optimization of transmitter and receiver pulse-shaping filters Sep. 29, 2009
7593494 System and method for canceling impulse noise Sep. 22, 2009
7593493 Method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system Sep. 22, 2009
7593486 Apparatus and method for controlling transmission mode in a MIMO mobile communication system Sep. 22, 2009
7590396 Multimode communication device with shared signal path programmable filter Sep. 15, 2009
7590206 Equalization apparatus and equalization method Sep. 15, 2009
7590205 Receiver with sliding intermediate frequency (IF) architecture and programmable bandwidth and method Sep. 15, 2009
7590204 Technique for adaptive equalization in band-limited high data rate communication over fading dispersive channels Sep. 15, 2009
7590172 Low bias estimation of small signal-to-noise ratio Sep. 15, 2009
7587010 Complex filter circuit and receiver circuit Sep. 8, 2009
7587009 Synchronization and estimation of a transmission channel Sep. 8, 2009
7586996 Method for controlling the power of the output signal from an amplifier system and the associated system Sep. 8, 2009
7586992 Apparatus and method for channel estimation and cyclic prefix reconstruction in an OFDM-STBC mobile communication system Sep. 8, 2009
7583756 Adaptive pilot filter for a wireless communication system Sep. 1, 2009
7583737 OFDM signal receiver device and OFDM signal receiving method Sep. 1, 2009
7583724 Low-power mixed-mode echo/crosstalk cancellation in wireline communications Sep. 1, 2009
7583723 Method and apparatus providing an advanced MIMO receiver that includes a signal-plus-residual interference (SPRI) detector Sep. 1, 2009
7583722 Scaling using gain factors for use in data detection Sep. 1, 2009
7580466 Demodulation device and demodulation method Aug. 25, 2009
7580455 Decision feedback equalization with fractionally-spaced feedback data Aug. 25, 2009
7577216 Guard interval and FFT mode detector in DVB-T receiver Aug. 18, 2009
7577194 Equalizer and equalization method Aug. 18, 2009
7577160 MB-OFDM transmitter and receiver and signal processing method thereof Aug. 18, 2009
7573966 Adaptive noise filtering and equalization for optimal high speed multilevel signal decoding Aug. 11, 2009
7573965 Kalman filter for channel estimation in OFDM systems Aug. 11, 2009
7573964 Channel estimator with extended channel bandwidth Aug. 11, 2009
7573958 Receiver for and method of recovering transmitted symbols in a H-ARQ packet retransmission Aug. 11, 2009
7573956 Time encoding and decoding of a signal Aug. 11, 2009
7570608 Echo canceller disabler for modulated data signals Aug. 4, 2009
7567638 System and method for canceling interference in a communication system Jul. 28, 2009
7565125 Telecommunications receiver with automatic gain control Jul. 21, 2009
7561648 Frequency error estimation Jul. 14, 2009
7561647 Equalising and decoding device for frequency-selective channels Jul. 14, 2009
7561633 System and method for MIMO equalization for DSP transceivers Jul. 14, 2009
7558353 Method for suppressing impulse noise and device thereof Jul. 7, 2009
7558352 Apparatus and method for preprocessing of pilot symbols for channel estimation by means of adaptive low-pass filtering Jul. 7, 2009
7558351 Super harmonic filter and method of filtering frequency components from a signal Jul. 7, 2009
RE40810 Reduced MIPS pulse shaping filter Jun. 30, 2009
7555082 Device, apparatus and method for receiving data transmissions having different data rates Jun. 30, 2009

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