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8984038 Method and system for unconstrained frequency domain adaptive filtering  
Aspects of a method and system for unconstrained frequency domain adaptive filtering include one or more circuits that are operable to select one or more time domain coefficients in a current...
8959132 Use of line characterization to configure physical layered devices  
A method of optimizing filter performance through monitoring channel characteristics is provided. A signal enters a channel and a receiver receives the signal. The receiver includes a FIR filter...
8949303 Filter  
Provided is an FIR filter capable of obtaining predetermined characteristics with a small number of input taps, delay circuits, and multipliers and achieving an improved response and low cost. In...
8943117 Method and apparatus for hybrid digital filtering  
New hybrid filters are presented based on time and transform domain structures. The hybrid filters have a combined benefit from the advantages obtained by the time and transform domain structures....
8938483 Filter parallelization for high data throughput  
A filter can include a first channel and a second channel. The first channel can be configured to process a first term and a second term of an input vector using a first coefficient and a second...
8909687 Efficient FIR filters  
A processor for calculating a convolution of a first input sequence of numbers with a second input sequence of numbers to generate an output sequence is provided. The processor includes...
8886693 Efficiently update coefficients of an adaptive filter  
An adaptive filter configured to filter an input signal comprises Fourier transforming unit configured to transform the input signal into a frequency domain signal upon the basis of the Fourier...
8886694 S12 TX FIR architecture  
A FIR transmit architecture uses multiple driver divisions to allow signals with different delays to be summed into the output signal by the driver itself. The architecture includes a first...
8862649 Smoothing apparatus for peak windowing  
A smoothing apparatus for peak windowing includes an operator for generating a first input signal for smoothing using an input signal for peak windowing and a predetermined clipping threshold...
8782110 Signal processing system employing time and frequency domain partitioning  
The present invention relates to a method for processing a digital input signal by a Finite Impulse Response, FIR, filtering means, comprising partitioning the digital input signal at least partly...
8756267 Dual-multiply-accumulator operation optimized for even and odd multisample calculations  
According to some embodiments, a device is configured to perform a dual multiply-accumulate operation. In one embodiment, the device includes a functional unit configured to calculate, in...
8694569 High-speed system having compensation for distortion in a digital-to-analog converter  
A method and system for the design and implementation of an inverse-sinc function that can efficiently process signals produced by high-speed systems is presented. An integrated inverse-sinc...
8626810 Method and system for finite impulse response (FIR) digital filtering  
A method for finite impulse response (FIR) digital filtering is provided that includes generating a frequency domain sample block from an input sample block of length L, adding the computed...
8620980 Programmable device with specialized multiplier blocks  
A specialized multiplier block in a programmable device incorporates multipliers and adders, and is configurable as one or more types of finite impulse response (FIR) filter including a Direct...
8612503 Methods and apparatuses for flexible and high performance digital signal processing  
A Signal Processing Engine (SPE) includes circuitry for generating a selectable forward tap and a selectable reverse tap from a forward delay chain and a reverse delay chain, respectively. An...
8595278 Method and system for unconstrained frequency domain adaptive filtering  
Aspects of a method and system for unconstrained frequency domain adaptive filtering include one or more circuits that are operable to select one or more time domain coefficients in a current...
8589462 Digital optimal filter for periodically alternating signals  
A digital optimal filter having an especially sinusoidal pulse response uses a filter structure with a recursive and a transversal portion. The transversal portion comprises filter coefficients...
8583717 Signal processing circuit  
A signal processing circuit has two types of filters: an IIR filter 11 and an FIR filter 12 having an equivalent transfer function at all times. In an adjustment mode in which the signal...
8583716 Method and system for efficient full resolution correlation  
Aspects of a method and system for efficient full resolution correlation may include correlating a first signal with a second signal at a rate corresponding to a first discrete signal, wherein...
8572145 Signal processing apparatus, digital filter and recording medium  
Provided is a signal processing apparatus for compensating for a non-linear distortion of a digital signal, including: an analysis signal generating section that converts the digital signal into a...
8571095 Equalization filter and distortion compensating method  
An equalization filter is provided for solving the problem in which there is a limited range in which compensated for distortion of a transmission signal can be made. Measuring instrument 104...
8548097 Coarse phase estimation for highly-spectrally-efficient communications  
Methods and systems are provided for coarse phase estimation for highly-spectrally efficient communications. An example method may include, equalizing, in a receiver, a received inter-symbol...
8549057 Signal level control  
An embodiment of a method for control of signal level is disclosed. In such an embodiment, a number for a pre-cursor set, a number for a cursor set, and a number for a post-cursor set are set...
8542142 Interleaved analog to digital converter with reduced number of multipliers for digital equalization  
A digital equalizer with a reduced number of multipliers for correction of the frequency responses of an interleaved ADC is disclosed. An exemplary interleaved analog to digital converter with...
8468188 Movable tap finite impulse response filter  
A finite impulse response (FIR) filter apparatus including: an input configured to receive a first input signal; a plurality of coefficient taps configured to filter the first input signal; a...
8463838 Optical processor including windowed optical calculations architecture  
A windowed optical calculation architecture and process that efficiently performs high speed multi-element multiply and accumulates on a digital data stream. A data point from a digital data...
8463833 Filtering method and apparatus of low complexity fir filter, and recording medium thereof  
A filter method and an apparatus of a low complexity Finite Impulse Response (FIR) filter, and a recording medium thereof are provided. A filtering method of the low complexity FIR filter includes...
8452828 Method and apparatus for implementing finite impulse response filters without the use of multipliers  
A finite impulse response filter is implemented as a sum of individual component, running-sum filters. The sum of all of the component filters required for a desired filter response is calculated...
8452827 Data processing circuit  
The invention relates to a data processing system for performing a polyphase filtering. This circuit comprises functional units (304, 305, 306) able to perform polyphase filterings, and a memory...
8392493 Noise canceling device, weighing device, method of canceling a noise, and method of designing a digital filter  
It is an object of the present invention to provide techniques which allow for easier change in filter characteristics of a digital filter. Then, in order to attain this object, in a weighing...
8386550 Method for configuring a finite impulse response filter in a programmable logic device  
A hybrid FIR filter includes a plurality of FIR filter units arranged as Direct Form FIR filters, connected together in an arrangement similar to a Transpose Form FIR filter. The hybrid filter...
8380772 Multi-rate filter bank  
A multi-rate filter bank including an anti-aliasing filter, a plurality of multiplier block modules, a folding block, and a data composer is disclosed. The anti-aliasing filter receives an...
8326905 Transversal filter circuit with a plurality of delay units, multiplexers, and full adders suited for a smaller decision feedback equalizer  
A transversal filter circuit comprises a plurality of delay units, a plurality of multiplexers and a plurality of full adders. The plurality of delay units is coupled in series to delay a two-bit...
8296347 Use of line characterization to configure physical layered devices  
A method of optimizing filter performance through monitoring channel characteristics is provided. A signal enters a channel and a receiver receives the signal. The receiver includes a FIR filter...
8295412 Compact filter design  
An apparatus and method for signal detection in which a digital sample stream is fed round robin into a plurality of buffers, which are sequentially compared with a reference signal to determine a...
8285772 Order adaptive finite impulse response filter and operating method thereof  
A device for allocating a number of taps of a designated finite impulse response filter is disclosed. The device comprises a plurality of designated finite impulse response filters having fixed...
8165255 Multirate resampling and filtering system and method  
A discrete time signal resampling circuit (200). A data sample processing module (260) removes selected samples from a sequential plurality of discrete time signal samples to implement fractional...
8164491 Coefficient multiplier and digital delta-sigma modulator using the same  
Provided are a coefficient multiplier and digital delta-sigma modulator using the same. The coefficient multiplier has the average of output signals of respective dependent multipliers as an...
8130876 Method for receiving a multi-carrier signal, transmission method, corresponding receiver and transmitter  
The invention concerns a method for receiving a multi-carrier signal of reduced complexity when the number of carriers is not high. The method includes: demodulating the multi-carrier signal;...
8126949 Reconfigurable filter node for an adaptive computing machine  
A reconfigurable filter node including an input data memory adapted to store a plurality of input data values, a filter coefficient memory adapted to store a plurality of filter coefficient...
8077642 Methods and apparatus for signal echo cancellation and transmitter calibration in full duplex systems  
A method includes transmitting a first signal over a network from a first communication link to a second communication link. The method further includes receiving a second signal with the first...
8051121 Dual multiply-accumulator operation optimized for even and odd multisample calculations  
According to some embodiments, a dual multiply-accumulate operation optimized for even and odd multisample calculations is disclosed.
8028013 Fast filtering means and filtering and decimation methods  
The invention relates to a hardware implemented filtering method including establishing a representation DIS of the derivative of at least a part of a time-quantized input signal IS, and...
7984092 FIR filter process and FIR filter arrangement  
The present invention relates to a FIR filter process (1′) and to a respective FIR filter arrangement (1) wherein at least one multiplex mode is given which is characterized in that in the...
7966360 Finite impulse response filter and digital signal receiving apparatus  
An A/D conversion section performs oversampling on an analog signal at a rate M times a symbol rate to convert the analog signal into a digital signal. A FIR filtering section has two...
7958178 Finite impulse response filter for a time-synchronized system  
A Finite Impulse Response (“FIR”) filter that uses an approximation of the time integral of the impulse response derived from data collected at non-uniform intervals and processes...
7945610 Convolution operation circuit  
There is provided a convolution operation circuit that performs a convolution operation on a provided digital signal. The convolution operation circuit includes a data dividing section that...
7933943 Multiplierless FIR digital filter and method of designing the same  
Provided are a multiplierless FIR digital filter and a method of designing the same, in which a filtering operation is performed by a small addition/subtraction circuit using extracted information...
7921147 Filtering integrated circuit  
A filtering integrated circuit comprises: a storing circuit; a filter coefficient calculating unit configured to receive frequency information that identifies a characteristic frequency of an...
7912884 Method and apparatus for implementing finite impulse response filters without the use of multipliers  
A finite impulse response filter is implemented as a sum of individual component, running-sum filters. The sum of all of the component filters required for a desired filter response is calculated...