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Class Information
Number: 329/320
Name: Demodulators > Frequency modulation demodulator > Having specific distortion, noise or other interference prevention, reduction or compensation > By cancelling distortion, noise or other interference
Description: Subject matter which combines a derived error or deviation signal with an intermediate demodulator signal to achieve neutralization of an undesirable characteristic in the final demodulator output.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8670509 Adaptive path selection for interference cancellation Mar. 11, 2014
8599972 SIR estimation in a wireless receiver Dec. 3, 2013
8588353 Frequency selective IQ correction Nov. 19, 2013
8532225 DC compensation for VLIF signals Sep. 10, 2013
8509341 Communications device including a filter for notching wideband transmit signals and associated methods Aug. 13, 2013
8509347 Method and system for baseband predistortion linearization in multi-channel wideband communication systems Aug. 13, 2013
8503577 Signal quality estimation in a wireless communication system Aug. 6, 2013
8503590 Receiving apparatus for receiving signals through adaptive array antenna Aug. 6, 2013
8335269 Apparatus for receiving signals in a communication system based on multicarrier transmission and method for interference cancellation Dec. 18, 2012
8290100 Interference detection and mitigation Oct. 16, 2012
8265206 Radio communication device and radio communication method Sep. 11, 2012
8218687 Frequency dependent I/Q imbalance estimation Jul. 10, 2012
8170151 FSK receiver May. 1, 2012
8160191 Correction of quadrature errors Apr. 17, 2012
8098779 Interference detection and mitigation Jan. 17, 2012
8093765 System for noise reduction in circuits Jan. 10, 2012
8093943 Phase noise correction device and its method Jan. 10, 2012
8073076 Method and apparatus for processing a communication signal Dec. 6, 2011
8073079 Angle-modulated signal threshold extension device and method Dec. 6, 2011
8064496 Interference cancellation for wireless communication Nov. 22, 2011
8026758 FM demodulator Sep. 27, 2011
7884680 Dynamically adjustable Q-factors Feb. 8, 2011
7864879 System having a signal processor for detection of a signal type Jan. 4, 2011
7844018 Methods and apparatuses for reducing inter-carrier interference in an OFDM system Nov. 30, 2010
7728461 System for noise reduction in circuits Jun. 1, 2010
7724836 Method and receiving unit for compensation for a frequency offset and/or for a change in the phase of a transmission channel over time by receiver-end evaluation of edge symbols of a received May. 25, 2010
7702023 Transmitter operations for interference mitigation Apr. 20, 2010
7663431 Tuner and demodulating unit thereof Feb. 16, 2010
7433428 Method of reducing the variance of the signal-to-noise rate estimated for a signal with amplitude differential phase-shift keying modulation Oct. 7, 2008
7428280 Receiving apparatus and transceiver Sep. 23, 2008
7348838 Method and system for DC offset cancellation from a modulated signal Mar. 25, 2008
7277688 DC offset correction for very low intermediate frequency receiver Oct. 2, 2007
7260163 Noise blanker using an adaptive all-pole predictor and method therefor Aug. 21, 2007
7184487 Receiver with chopper stabilization and method thereof Feb. 27, 2007
7133476 Apparatus and methods for suppression of interference among disparately-modulated signals Nov. 7, 2006
7116734 Method and system for providing maximum likelihood detection with decision feedback interference cancellation Oct. 3, 2006
7023265 Equalizing method in receivers using a combination of multiple carrier and code division multiple access modulating techniques Apr. 4, 2006
6998908 Adaptive interference cancellation receiving system using synthesizer phase accumulation Feb. 14, 2006
6985029 Circuit configuration for tolerance correction in a frequency demodulator Jan. 10, 2006
6980785 Direct conversion wireless receiver with digital phase equalization Dec. 27, 2005
6972617 FM demodulator including a DC offset detector Dec. 6, 2005
6862440 Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration Mar. 1, 2005
6822508 Communication device, communication method, program, and storage medium Nov. 23, 2004
6751264 Receiver and method therefor Jun. 15, 2004
6735264 Compensation for non-linear distortion in a modem receiver May. 11, 2004
6731704 Apparatus and bit-shift method for eliminating interference of cross polarization May. 4, 2004
6664849 Digital FM demodulator performing amplitude compensation Dec. 16, 2003
6590932 Methods, receiver devices and systems for whitening a signal disturbance in a communication signal Jul. 8, 2003
6400774 Nonlinearity-caused distortion compensating system Jun. 4, 2002
6400778 DC-offset canceller Jun. 4, 2002

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