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US20100190198 
ASYMMETRIC SYSTEMS
Among other things, a combination comprises interaction with a system that has a perturbation. In such perturbed system, a nondirectional input is applied to a first variable of the system. Based... 

US20060271613 
Apparatus and method for performing FFT operation
An FFT operation apparatus performs the real number FFT operation in real time for an extremely large number of data using a cache memory. The cache memory stores a part of data to be operated... 

US20090172062 
EFFICIENT FIXEDPOINT IMPLEMENTATION OF AN FFT
A fast Fourier transform (FFT) is performed on firstfourth input data points. Real and imaginary portions of the first input data point are stored in first and second registers. Real and... 

US20100217790 
METHOD AND APPARATUS FOR DIGITAL UPDOWN CONVERSION USING INFINITE IMPULSE RESPONSE FILTER
A method and an apparatus for digital updown conversion using an Infinite Impulse Response (IIR) filter are provided. The method for digital updown conversion for frequency conversion in a... 

US20080133632 
APPARATUS AND METHOD FOR COMPARING PROTEIN STRUCTURES USING PRINCIPAL COMPONENTS ANALYSIS AND AUTOCORRELATION
Provided is an apparatus and method for comparing structures of proteins by extracting main axes of the proteins using principal components analysis (PCA), dividing regions using grids into voxels... 

US20100228810 
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... 

US20080052336 
Method and Apparatus for Providing FFTBased Signal Processing with Reduced Latency
An approach is provided for reducing latency in fast Fourier transformation (FFT) related systems, such as orthogonal frequency division multiplexing (OFDM) systems. In a first processing... 

US20100082722 
Methods and Apparatuses for Detection and Estimation with Fast Fourier Transform (FFT) in Orthogonal Frequency Division Multiplexing (OFDM) Communication Systems
Methods and apparatuses are provided for a fast Fourier transform (FFT)/inverse fast Fourier transform (IFFT) architecture that not only allows for efficient computation of Npoint FFT/IFFT... 

US20100109875 
Noninvasive Motion and Respiration Monitoring System
A noninvasive motion and respiration monitor receives impulses from a subject's movement, heartbeat, and respiration. The raw signal is biased and digitized, and a signal processor applies a Fast... 

US20100293214 
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... 

US20050010628 
Inplace memory management for FFT
A method for inplace memory management in a Digital Signal Processing (DSP) architecture performing a Fast Fourier Transformation (FFT) upon a sequence of N data points, the sequence numbered... 

US20080040413 
IFFT PROCESSING IN WIRELESS COMMUNICATIONS
Techniques for performing IFFT pipelining are described. In some aspects, the pipelining is achieved with a processing system having a memory having first and second sections, an encoder... 

US20090037506 
RECEIVING APPARATUS AND METHOD
A FFT circuit performs M×R×Qpoint fast Fourier transform of received signals, wherein M is an oversampling rate of the received signals, Q is a chip repetition unit and R is a chip repetition... 

US20150242365 
Method and Apparatus of a FullyPipelined FFT
A plurality of three bit units (called triplets) are permuted by a shuffler to shuffle the positions of the triplets into different patterns which are used to specific the read/write operation of... 

US20100106758 
COMPUTING DISCRETE FOURIER TRANSFORMS
A system described herein includes a selector component that receives input data that is desirably transformed by way of a Discrete Fourier Transform, wherein the selector component selects one of... 

US20100011046 
APPARATUS AND METHOD FOR VARIABLE FAST FOURIER TRANSFORM
The present invention relates to an apparatus and method for variable fast Fourier transform. According to an embodiment of the present invention, two npoint fast Fourier transform (FFT)... 

US20100191792 
Signal Processing with Fast STransforms
The ability to examine the frequency content of a signal is critical in a variety of fields, and many techniques have been proposed to fill this need, including the Fourier and wavelet family of... 

US20090006516 
Methods and systems for processing and displaying data
Methods and systems of processing and displaying data that include obtaining and processing timetime data to obtain an inphase sum of the timetime data, and of providing and utilizing the... 

US20140324936 
PROCESSOR FOR SOLVING MATHEMATICAL OPERATIONS
Processors and methods for solving mathematical equations are disclosed herein. An embodiment of the processor includes a hardware device that calculates coefficients based on a mathematical... 

US20140089369 
MULTIGRANULARITY PARALLEL FFT COMPUTATION DEVICE
A multigranularity parallel FFT computation device including three memories, a butterfly computation device, a state control unit, a data reversing network and a first selector. The three... 

US20140280420 
VECTOR PROCESSING ENGINES HAVING PROGRAMMABLE DATA PATH CONFIGURATIONS FOR PROVIDING MULTIMODE RADIX2X BUTTERFLY VECTOR PROCESSING CIRCUITS, AND RELATED VECTOR PROCESSORS, SYSTEMS, AND METHODS
Vector processing engines (VPEs) having programmable data path configurations for providing multimode Radix2X butterfly vector processing circuits. Related vector processors, systems, and... 

US20110062339 
System and Method for Analysis of Ultrasonic Power Coupling During Acoustic Thermography
A system and method of performing acoustic thermography in which invalid data is filtered from data used to detect defects on a structure. An ultrasonic sound input signal is provided to a... 

US20100322533 
Cyclic Noise Removal in Borehole Imaging
A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a twodimensional (2D) Fourier Transform, removing cyclic noise components... 

US20120281739 
PROCESSOR FOR PROCESSING DIGITAL DATA WITH BUTTERFLY OPERATOR FOR THE EXECUTION OF AN FFT/IFFT AND TELECOMMUNICATION DEVICE
A processor for processing digital data includes at least one butterfly operator for executing an FFT/IFFT computation. This butterfly operator contains a first stage of complex multiplication and... 

US20100257220 
MULTIDIMENSIONAL TRANSFORM FOR DISTRIBUTED MEMORY NETWORK
An information processing system for performing a transform of a multidimensional matrix in a distributed memory network. The method includes storing a multidimensional matrix of side N in a... 

US20100161699 
HIGHSPEED DISCRETE FOURIER TRANSFORM APPARATUS AND METHOD THEREOF
Provided are a highspeed Discrete Fourier Transform (DFT) apparatus and a method thereof. The highspeed DFT apparatus includes a zero padding unit, a Fast Fourier Transform (FFT) unit, and a... 

US20070250558 
Method and Device for Performing Spectrum Analysis of a Wanted Signal or Noise Signal
A method and device for performing spectrum analysis of a signal in a plurality of frequency bands with respective different frequency resolutions. Said method comprises a data acquisition step... 

US20140089367 
Techniques for Improving the Efficiency of Mixed Radix Fast Fourier Transform
Techniques for implementing mixedradix FFT on SIMD vector processors efficiently for the latest standard in wireless communication technology by dynamically reordering stages are provided. In one... 

US20140089366 
Techniques for Improving the Efficiency of Mixed Radix Fast Fourier Transform
Techniques for implementing mixedradix FFT on SIMD vector processors efficiently for the latest standard in wireless communication technology by dynamically reordering stages are provided. In one... 

US20130254251 
COMMUNICATION APPARATUS AND COMMUNICATION METHOD
A series generator divides a data series having an autocorrelation property equally into a certain number to generate subdata series. A modulator multiplies a predetermined amplitude coefficient... 

US20100250636 
APPARATUS AND METHODS FOR DYNAMIC DATABASED SCALING OF DATA
Disclosed are apparatus and methods for dynamic databased scaling of data. The disclosed methods and apparatus involve storing one or more input data samples, which are to be scaled and input to... 

US20100246654 
ULTRA LOW POWER RF LINK
A receiver including a processor. A plurality of Fast Fourier Transforms of a plurality of signal segments of a signal can be determined by the processor. The plurality of Fast Fourier Transforms... 

US20100235419 
FILTERING APPARATUS, FILTERING METHOD, PROGRAM, AND SURROUND PROCESSOR
A filtering apparatus for obtaining an output in a case where a discretetime signal having a length of N (N is an integer) is input to an FIR filter with a filter coefficient having a length of M... 

US20100223312 
CORDICBASED FFT AND IFFT APPARATUS AND METHOD
Provided two CORDIC processors, each including: two input ports representing real and imaginary input ports; and two output ports representing real and imaginary output ports; wherein real and... 

US20100185715 
Method and Device for Transform Computation
A method of operating a dataprocessing unit to produce a transform comprises calculating first and second output data values based at least on first and second input data values. The method... 

US20100179978 
FFTBASED PARALLEL SYSTEM WITH MEMORY REUSE SCHEME
A method may include storing N number of Fast Fourier Transform (FFT) data points into xmemories, N and x being integers greater than one, and the xmemories having a total memory capacity... 

US20100174769 
InPlace Fast Fourier Transform Processor
An Npoint Fast Fourier Transform (FFT) using mixed radix stages with inplace data sample storage may be performed by decomposing N into a product of R sequential mixed radix stages of... 

US20100169402 
FAST FOURIER TRANSFORM PROCESSOR
An FFT processor is disclosed, which includes a first multipipelined MDC unit, a second multipipelined MDC unit and a switching network. The first multipipelined MDC unit and the second... 

US20100165829 
METHODS AND SYSTEMS FOR PAPR REDUCTION IN SCFDMA SYSTEMS
Certain embodiments of the present disclosure relate to methods for peaktoaverage power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access... 

US20100128818 
FFT PROCESSOR
An Npoint FFT processor 100 suitable for large data inputs (e.g. 2 k or 8 kpoint input data) is formed from a mpoint FFT processor unit 10 and a npoint FFT processor unit 20 in combination,... 

US20100121617 
Concept for Realistic Simulation of a Frequency Spectrum
An apparatus for simulating a signal composed of a plurality of individual signals from respective signal locations at a simulation location, having a provider for providing the plurality of... 

US20100106759 
Methods and apparatus for reordering data
A data reordering system for determining addresses associated with a vector of transformed data and corresponding method of reordering transformed data, where the data reordering system includes:... 

US20100106267 
MUSIC RECORDING COMPARISON ENGINE
A method is provided to compare recordings that includes providing a list of a plurality of recordings and selecting at least a first recording and a second recording from the plurality of... 

US20070073796 
METHOD AND APPARATUS FOR FFT COMPUTATION
The invention relates to a method and apparatus for computing a 2Npoint Fourier transform, direct or inverse, out of a 2Nsample input sequence. According to the invention, a signal processing... 

US20170168989 
Configurable FFT Architecture
A device for performing a Fast Fourier Transform (FFT) on an input dataset includes an FFT pipeline having a first stage configured to receive the input dataset, a plurality of intermediate stages... 

US20170132175 
FFT DEVICE AND METHOD FOR PERFORMING A FAST FOURIER TRANSFORM
An FFT device for performing a Fast Fourier Transform (FFT) of an operand vector of length N is described. The FFT device comprises: a control unit arranged to control a sequence of transformation... 

US20170103042 
SYSTEM AND METHOD FOR OPTIMIZING MIXED RADIX FAST FOURIER TRANSFORM AND INVERSE FAST FOURIER TRANSFORM
A system for implementing a mixed radix fast fourier transformation is disclosed. The system includes a data source 202, a digitreverse address generator 204, a data memory 206, a register array... 

US20170091147 
FAST FOURIER TRANSFORM (FFT) CUSTOM ADDRESS GENERATOR
An apparatus and method for Fast Fourier Transform (FFT) address generation is disclosed. The apparatus may include a counter circuit and circuitry configured to load an initial value into a... 

US20170083479 
DIGITAL SIGNAL PROCESSOR USING SIGNED MAGNITUDE AND WIRELESS COMMUNICATION RECEIVER HAVING THE SAME
A digital signal processor is provided. The digital signal processor includes an execution circuit configured to receive a first data including first bits expressed in a signed magnitude method... 

US20170075860 
SIGNAL PROCESSING METHOD AND DEVICE
An embodiment of the present invention discloses a data processing method, including: twiddling input data, so as to obtain twiddled data; prerotating the twiddled data by using a symmetric... 