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7688984 Active noise control method and apparatus including feedforward and feedback controllers  
An active noise control apparatus for reducing noise from a noise source includes a microphone for detecting noise produced by the noise source, and a generalized finite impulse response (FIR)...
7689637 Adaptive filtering method and related device  
An input signal is filtered for creating an output signal using an adaptive filter. An error signal is derived from the output signal. The adaptive filter has coefficient whose value can be...
7668237 Equalizer containing a plurality of interference correcting equalizer sections  
An equalizer includes at least two first mutually interfering equalizer sections, and at least two second interference-correcting equalizer sections, arranged in series. Each of the second...
7656943 High performance equalizer having reduced complexity  
An apparatus and method for implementing an equalizer which combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood...
7656940 Equalizer and equalizing method  
Filtering part 50 performs filtering by converting a received signal sampled using a predetermined number of over-samples to an over-sample number small enough to avoid frequency-domain foldover...
7653127 Bit-edge zero forcing equalizer  
Bit-Edge Zero Forcing Equalizer. A novel solution is presented by which a BE-ZFE (Bit-Edge Zero Forcing Equalizer) is employed to drive an error term within a data signal to an essentially zero...
7649930 Filter equalization using magnitude measurement data  
A filter equalization technique for an analog signal path, such as in an instrument that simultaneously measures a signal over a band of frequencies, uses magnitude measurement data for high...
7631028 Statistical control of adaptive ocular filter stability  
An electroencephalograph system and method for controlling the stability of an adaptive filter during high noise spikes in ocular sensor channels. The method comprises receiving a signal from at...
7613758 Method for optimization of Q-Filter kernel parameters  
A Q-Filter is a reconfigurable technique that performs a continuum of linear and nonlinear filtering operations. It is modeled by unique mathematical structure, utilizing a function called the...
7606339 Information handling system including adaptive interference suppression feature and method of operation  
An information handling system includes a wireless device and interference suppression apparatus that adapts to the different interference problems experienced by the wireless device when the...
7561619 Feedback filter  
Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to...
7552158 Digital filter and digital broadcasting receiver having the same  
The present invention relates to a digital filter capable of computing a tap without output delay due to the filter operation in a symbol time, and a digital broadcasting receiver having the same....
7548790 Effective deployment of temporal noise shaping (TNS) filters  
In the MPEG2 Advanced Audio Coder (AAC) standard, Temporal Noise Shaping (TNS) is currently implemented by defining one filter for a given frequency band, and then switching to another filter for...
7545886 Method and apparatus for eye-opening based optimization  
An eye opening measurement technique, that does not interrupt a receiver's normal operation, is used as a metric for optimizing any selected parameters of the receiver's operation. If eye opening...
7535954 Method and apparatus for performing channel equalization in communication systems  
A method and apparatus for performing channel equalization in a communication system may potentially reduce power consumption in channel equalizers of communication systems. A filtering circuit...
7533140 Method and apparatus for enhancing processing speed for performing a least mean square operation by parallel processing  
The present invention is related to a method and apparatus for enhancing processing speed for performing a least mean square operation by parallel processing. The input data are subdivided into a...
7526052 Configurable filter and receiver incorporating same  
An efficient configurable signal filter. The filter includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism selectively...
7492848 Method and apparatus for efficient multi-stage FIR filters  
An interpolation filter without a FIFO memory is configured as a cascade arrangement of simpler interpolation sub-filters that are operated in reverse order. The interpolation sub-filter that...
7472151 System and method for accelerating arithmetic decoding of video data  
Presented herein is a system and apparatus for accelerating arithmetic decoding of encoded data. In one embodiment, there is presented a symbol interpreter for decoding CABAC coded data. The...
7466750 Apparatus for channel equalization using multi antenna and method thereof  
The present invention provides an apparatus for channel equalization and method thereof, by which a digital signal received via a plurality of antennas is equalized. The present invention includes...
7461113 Reduced complexity adaptive filter  
A FIR filter for use in an adaptive multi-channel filtering system, includes a first memory for storing data, and a second memory for storing filter coefficients. The second memory stores only...
7460594 Fast computation of linear equalizer coefficients from channel estimate  
Computing optimal Linear Equalizer (LE) coefficients gopt from a channel estimate h. A channel impulse response h is first estimated based upon either a known training sequence or an unknown...
7460593 Signal processing device capable of enhancing correctness of feedback signals  
A signal processing device for processing a passband signal to generate an equalized signal includes a passband adaptive equalizer for generating the equalized signal according to the passband...
7436968 Adaptive noise reduction method and device  
An adaptive noise reduction method and apparatus capable of reducing efficiently variable period noise from a main input is provided. The pitch of a noise waveform to be reduced can be variable...
7433908 Selective-partial-update proportionate normalized least-mean-square adaptive filtering for network echo cancellation  
A reduced-complexity, fast converging adaptive filter may be used for network echo cancellation applications, including applications having sparse echo paths. The new filter, referred to as a...
7424407 Removing electrical noise in systems with ADCs  
Signal processing systems and methods are described that include a multi-analog receiver front end with adaptive filtering. The multi-analog receiver front end uses two or more analog-to-digital...
7421022 Method for robust and stable convergence of blind LMS based adaptation of coefficients for a continuous time FFE-DFE  
A continuous time electronic dispersion compensation architecture using feed forward equalization and a non-linear decision feedback equalization forms an output signal by a linear combination of...
7421021 Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control  
An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and...
7415065 Adaptive filtering in the presence of multipath  
Adaptively analyzing an observed signal to estimate that part of the signal that best corresponds to a steering vector. Modifying the steering vector by convolution of the steering vector with a...
7412472 Apparatus and method for filtering a signal  
A method, system, and computer program are provided for filtering a signal. The method, system, and computer program receive a sample of a signal being filtered and identify a bias associated with...
7406122 Equalizer and method of setting initial value for same  
An equalizer is provided which is capable of making a filter factor to be set in the equalizer having an equalizing filter converge rapidly and a method is provided for setting an initial value...
7386044 Computation of decision feedback equalizer coefficients with constrained feedback tap energy  
A Decision Feedback Equalizer (DFE) system includes a DFE and a DFE coefficients processor. The DFE receives an uncompensated signal and operates upon the uncompensated input using DFE...
7359521 Aliasing cancellation in audio effects algorithms  
A method for effecting aliasing cancellation in an audio effects algorithm using a delay modulated signal, derived from interpolation of a delay modulator at an instantaneous sampling frequency,...
7353245 Adaptive filter coefficient determination  
Operation of an adaptive filter includes determining a first filter coefficient and determining a second filter coefficient based on the first filter coefficient, in one embodiment, and in another...
7342983 Apparatus and method for digitally filtering spurious transitions on a digital signal  
A digital filtering apparatus and method for digitally filtering out undesirable or invalid data from data signal lines. The digital filtering apparatus includes a digital delay element having one...
7340064 Active noise control system  
An active noise control system is provided which cancels a noise using a secondary noise from a speaker that is operated in accordance with an output from an adaptive controller. The system is...
7333539 High order filters with controllable delay and performance  
A digital filter is disclosed, the filter comprising a device for determining the initial condition of a partial filter input, using a partitioned filter input signal, and partitioned filter input...
7313181 Calibration of scale factor in adaptive equalizers  
An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a...
7310425 Multi-channel frequency-domain adaptive filter method and apparatus  
The invention is a method and apparatus for frequency-domain adaptive filtering that has broad applications such as to equalizers, but is particularly suitable for use in acoustic echo...
7305030 Method and apparatus for implementation of a zero forcing equalizer  
An equalizing apparatus includes an equalizer which has a plurality of adjustable tap weights that equalizes a received signal based on values of the adjustable tap weights, a tap weight update...
7299251 Adaptive filter  
An adaptive filter is implemented by a computer (10) processing an input signal using a recursive least squares lattice (RLSL) algorithm (12) to obtain forward and backward least squares...
7298791 Multiple date rate filtered modulation system for digital data  
In an exemplary embodiment, a multi-rate data conversion circuit receives digital data at varying data rates, receives a data rate input corresponding to the digital data and converts the digital...
7293055 Flexible adaptation engine for adaptive transversal filters  
A flexible adaptation engine includes a coefficient adaptation circuit that implements multiple adaptation algorithms, and/or multiple coefficient selection algorithms, to adapt the filter...
7289555 Method and system for signal processing using vector output from scalar data  
A method for processing a signal includes receiving a signal from a channel at a channel speed and providing error adjustment to the signal. The method includes sampling the signal at a speed less...
7286006 Sign-sign least means square filter  
In some embodiments, an adaptive filter employs two adaptation modes, where during one adaptation mode the adaptive filter is updated only when the received training sample is a first binary value...
7263542 Inverse filtering method, synthesis filtering method, inverse filter device, synthesis filter device and devices comprising such filter devices  
An inverse filtering method, comprising: generating a first filtered signal based on an input signal; and combining the first filtered signal with the input signal for obtaining a residual signal....
7248645 Wireless transmission using an adaptive transmit antenna array  
Closed loop wireless communication of signals using an adaptive transmit antenna array, in which multiple copies of signals to be transmitted by the transmit antenna array are produced with delays...
7236550 Method and apparatus for tail cancellation equalization  
Subtraction of a signal 111 from a pulse response 110, where signal 111 provides a good approximation of the tail of pulse response 110, can provide a method for canceling the tail of pulse...
7230982 Decision feedback equalizer for minimum and maximum phase channels  
This invention describes an apparatus and method to improve the performance of a decision feedback equalizer (DFE) for time-varying multi-path channels. For minimum-phase channels, the...
7225215 Adaptive filter employing adaptively controlled forgetting factor and adaptively controlling method of forgetting factor  
An adaptive filter, employing an adaptively controlled forgetting factor, includes a first circuit for determining a gradient of an error signal and a second circuit for determining a value of the...