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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
8107356 Method and apparatus for transmitting/receiving a signal in an FFH-OFDM communication system Jan. 31, 2012
8103229 Multimode communication device with shared signal path programmable filter Jan. 24, 2012
8102946 Systems and methods for performing SISO detection in a WiMAX environment Jan. 24, 2012
8102928 Spectrally constrained impulse shortening filter for a discrete multi-tone receiver Jan. 24, 2012
8102293 Digital direct conversion receiving apparatus and method Jan. 24, 2012
8098782 Communications device including a filter for notching wideband receive signals and associated methods Jan. 17, 2012
8098781 Communications system using adaptive filter with normalization circuit Jan. 17, 2012
8098723 Receiver employing non-pilot reference channels for equalizing a received signal Jan. 17, 2012
8098717 Hybrid equalizer Jan. 17, 2012
8098714 Method for estimating, in a communication system, the level of interference plus noise affecting received signals representative of a set of received pilot symbols Jan. 17, 2012
8095076 Methods and systems for low-complexity channel estimator in OFDM / OFDMA systems Jan. 10, 2012
8095019 Digital clock and data recovery scheme Jan. 10, 2012
8094763 Communications system using adaptive filter with adaptive update gain Jan. 10, 2012
8094762 Joint estimation of MIMO channels and noise correlation for wireless systems with multiple receive antennas Jan. 10, 2012
8094745 Power control using denoised crosstalk estimates in a multi-channel communication system Jan. 10, 2012
8094710 Wide band noise early detection and protection architecture for a frequency domain equalizer Jan. 10, 2012
8094708 Receiver with multiple antennas and method of receiving signals Jan. 10, 2012
8090332 Tracking filter for a receiver Jan. 3, 2012
8090034 Transmission apparatus and a reception apparatus in a multicarrier transmission system and a transmission method and a reception method using the multicarrier transmission system Jan. 3, 2012
8085890 Apparatus and method for base band filtering Dec. 27, 2011
8085871 Adaptive modulation in a multiple input multiple output wireless communication system with optional beamforming Dec. 27, 2011
8081722 Communications system and device using simultaneous wideband and in-band narrowband operation and related method Dec. 20, 2011
8081720 System and method for controlling gain and timing phase in a presence of a first least mean square filter using a second adaptive filter Dec. 20, 2011
8081713 DTV receiving system and method of processing DTV signal Dec. 20, 2011
8081676 Method and apparatus for data reception Dec. 20, 2011
8078131 Method for mitigating interference Dec. 13, 2011
8077819 Search engine for a receive equalizer Dec. 13, 2011
8077818 Radio receiver Dec. 13, 2011
8077817 Arrangement for adaptive bit recovery Dec. 13, 2011
8077808 Radio wave receiver and wave clock Dec. 13, 2011
8077799 Apparatus and method to adjust a phase and frequency of a digital signal Dec. 13, 2011
8077766 Method and device for receiving a data signal consisting of symbol blocks and corresponding computer program Dec. 13, 2011
8077764 16-state adaptive noise predictive maximum-likelihood detection system Dec. 13, 2011
8073393 Methods and systems for least squares block channel estimation Dec. 6, 2011
8073088 Method and communication device for interference cancellation in a cellular TDMA communication system Dec. 6, 2011
8073085 Analog to digital converter bit width and gain controller for a wireless receiver Dec. 6, 2011
8068539 Adaptive interference cancellation algorithm using speech mode dependent thresholds Nov. 29, 2011
8068530 Signal acquisition in a wireless communication system Nov. 29, 2011
8064556 Fractionally-spaced equalizers for spread spectrum wireless communication Nov. 22, 2011
8059773 Channel equalization in receivers Nov. 15, 2011
8059772 Filter and method for suppressing effects of adjacent-channel interference Nov. 15, 2011
8059768 Method and device for removing narrow band interference in spreading frequency system Nov. 15, 2011
8059708 Pulse width digitizing method and pulse width digitizer using thereof Nov. 15, 2011
8059705 Channel equalization using frequency and phase compensation Nov. 15, 2011
8054924 Data transmission method with phase shift error correction Nov. 8, 2011
8054875 Autoregressive moving average modeling for feedforward and feedback Tomlinson-Harashima precoder filters Nov. 8, 2011
8054874 Method and system for providing fast and accurate adaptive control methods Nov. 8, 2011
8050370 Digital signal receiving apparatus Nov. 1, 2011
8050335 Equal phase combining technique for a robust OFDM system Nov. 1, 2011
8046214 Low complexity decoder for complex transform coding of multi-channel sound Oct. 25, 2011

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