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7634001 |
Dynamic regulation of power consumption of a high-speed communication system
A method for dynamically regulating the power consumption of a high-speed integrated circuit which includes a multiplicity of processing blocks. A first metric and a second metric, which are...
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7630467 |
Data recovery circuits using oversampling for best data sample selection
An improved data recovery circuit based on an oversampling technique to select the best data sample to be kept as the data to recover that is only based on accumulating the data edges (or...
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7627054 |
Device and method for improving the signal to noise ratio by means of complementary sequences
A device and method for improving the signal to noise ratio by means of complementary sequences, consisting of the use of M complementary sets of sequences, understanding complementary as the sums...
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7627021 |
Interference canceling CDMA mobile station receiver
A receiver that provides interference cancellation in conjunction with RAKE processing. Signal parameters corresponding to each of a plurality of fingers corresponding to RAKE processing are...
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7623603 |
Intersymbol interference mitigation
Embodiments of the present invention provide for computing spatial covariances of intersymbol interference (ISI) and using the computed spatial covariances for ISI mitigation. Other embodiments may...
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7623600 |
High speed receive equalizer architecture
Equalization is provided in a high speed communication receiver that includes in various aspects an automatic gain control input stage, a decision feedback equalizer, a clock and data recovery...
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7620124 |
Direct conversion receiver and receiving method
A receiving method and a direct conversion receiver are provided. The receiver comprises a mixer ( 308 ) for mixing a received signal into a base band signal comprising I and Q branches, and an A/D...
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7616700 |
Method and system for slicing a communication signal
A slicer can receive a communication signal having a level or amplitude that is between two discrete levels of a multilevel digital communication scheme. The slicer can compare the communication...
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7606293 |
Bidirectional turbo ISI canceller-based DSSS receiver for high-speed wireless LAN
A bidirectional turbo ISI canceller cancels precursor-ISI as well as postcursor-ISI in a received signal without incorporating a multiplicative feedforward equalization filter. This is accomplished...
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7599344 |
Method and apparatus for reducing multi-user processing in wireless communication systems
A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a...
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7599455 |
Method and apparatus for determining an output sequence from an input sequence
A method and a device for determining an output sequence of output elements from an input sequence of input elements is provided, the method or the device being implemented according to a decision...
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7593458 |
FEXT determination system
Operational data is utilized to determine the FEXT interference induced by one line into the other DSL line. FEXT interference can be calculated using the NEXT interference measured between the two...
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7590176 |
Partial response transmission system and equalizing circuit thereof
A partial response transmission system in which a data signal is transmitted from a transmission side to a reception side through a transmission medium, includes an equalizing circuit provided in...
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7590172 |
Low bias estimation of small signal-to-noise ratio
A user equipment includes an estimator. The estimator is configured to select a first estimate of a signal-to-noise (SNR) ratio, calculate a first amplitude and first noise variance, calculate a...
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7586992 |
Apparatus and method for channel estimation and cyclic prefix reconstruction in an OFDM-STBC mobile communication system
An apparatus and method for channel estimation and CP reconstruction in an OFDM-STBC mobile communication system are provided. An ISI canceller cancels ISI signal components from first and second...
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7586998 |
Method and apparatus for receiver pulse response determination
A pulse response for a receiver, as an array PR, is found from the receiver's symbol stream. For a continuous stream of arbitrary data, a value of the array PR[k] can be determined from the signal...
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7583766 |
System, and associated method, for utilizing block BLAST with PPIC in a MIMO multicode MC-CDMA system
A method for reducing interference in a MIMO MultiCode MC-CDMA system is disclosed wherein a BLAST algorithm is implemented over one block of correlation reception data y i and estimation channel...
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7583768 |
Apparatus for canceling intersymbol interference in semiconductor memory device and method thereof
We provide an ISI canceling circuit including a storing unit to store an ISI value associated with a received signal, an operator to generate an operator output signal by subtracting the ISI value...
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7583767 |
Method and apparatus for parallel midamble cancellation
Method and apparatus for performing midamble cancellation to remove midamble interference from the convolution tail of data field 1 and the first W−1 chips of the midamble field which results...
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7574184 |
Method and device for detecting occupation by a signal of an adjacent channel
A method for detecting occupation of an adjacent channel by a signal with the aid of a complex-valued bandpass signal having an information channel component and/or an adjacent channel component....
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7573966 |
Adaptive noise filtering and equalization for optimal high speed multilevel signal decoding
A Signal Conditioning Filter (SCF) and a Signal Integrity Unit (SIU) address the coupled problem of equalization and noise filtering in order to improve signal fidelity for decoding. Specifically,...
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7573959 |
Method and apparatus for removing impulse noise
An impulse noise remover includes: a storage module for storing a plurality of digital values derived from a received signal; a calculating module coupled to the storage module for calculating a...
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7570701 |
Multi-pair gigabit ethernet transceiver
Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is...
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7564933 |
Method and system for near optimal iterative detection of the 2-dimensional ISI channel
A method and system for decoding data received from a channel experiencing two-dimensional inter-symbol interference, as well as systems implementing such a decoding method and system, are...
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7561633 |
System and method for MIMO equalization for DSP transceivers
A method to efficiently deal with FEXT crosstalk in wireline communication system via MIMO equalization is presented. A MIMO-DFE based receiver architecture is developed to demonstrate the...
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7551701 |
Frequency domain training of prefilters with interference suppression
Prefilters for a receiver with multiple input branches are trained in the frequency domain. The frequency response B of a conditioned channel is determined without reference to the prefilters, and...
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7551696 |
Method and apparatus of detecting ISI/ICSI in an OFDM system
A method for detecting inter-symbol interference (ISI) in an OFDM system includes the steps of computing a first correlation value representing the correlation between a plurality of first signals...
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7532563 |
Mechanism to improve quality of channel estimates in OFDM transmissions
An OFDM (Orthogonal Frequency Division Multiplexing) system may utilize pilot symbol structures including two or more pilot symbols with pilot information on alternate tones. The pilot information...
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7526042 |
OFDM system receiver apparatus suppressing inter-symbol interference
An OFDM receiver includes an inter-symbol interference suppressing unit to modify to a predetermined content a portion of a dominant wave included in a received signal and a predetermined content a...
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7522515 |
Method and system for providing window shaping for multiline transmission in a communications system
A method and system for providing window shaping for multiline transmission in a communications system are described. A last portion of a prefix symbol is extracted. A prefix with a prefix window...
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7515645 |
Method for dividing the bit rate of QPSK signals into two or several subchannels
The invention relates to a method for dividing the bit rate of QPSK signals by splitting the spectrum of said QPSK signals into at least two channels having band-limited filters in the modulator...
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7508860 |
Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same
Provided are a pulse signal generator for UWB radio transception and a radio transceiver having the same. The pulse signal generator includes: an envelope generator generating a plurality of...
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7508892 |
Receiver circuit comprising equalizer
A receiver circuit has an equalizer that equalizes a received signal propagating through a transmission medium; a data detection circuit that detects an analog output signal of the equalizer at a...
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7508862 |
Determination and selection of transmission paths as a function of the operating situation for setting up rake fingers for rake receiver units in mobile communication terminals
Correlations between the received signal to which pilot symbols have been applied at the transmitter end, and a correlation signal which contains the pilot symbols are carried out in the receiver...
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7502412 |
Adaptive channel estimation using decision feedback
A method and system thereof for determining feedback for iterative channel estimation based on the summation of soft output decisions or Bit Error Rate (BER) derived from the output of an...
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7502425 |
Efficient reduced complexity windowed optimal time domain equalizer for discrete multitone-based DSL modems
An algorithm for computing an efficient, reduced complexity, windowed optimal linear time domain equalizer for a dispersive channel comprises the steps of determining a window of maximum energy in...
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7492839 |
Efficient implementation of GSM/GPRS equalizer
The disclosed invention provides a method, a system and a computer program product for the maximum likelihood sequence estimation of transmitted MSK symbols. The disclosed invention provides a set...
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7492844 |
Data processing method, equalizer and receiver
The invention is related to an equalizer comprising, for instance: means for creating a first covariance matrix and defining a Cholesky decomposition matrix of an inverse matrix of the first...
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7489725 |
Decision feedback equalizer and precoder ramping circuit
A feedforward filter has a plurality of feedforward filter taps, including a feedforward filter reference tap. The reference tap of the feedforward filter is positioned proximate a center position...
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7489749 |
Optimum phase timing recovery in the presence of strong intersymbol interference
A data communication device with a receiver for receiving and processing incoming signal having intersymbol interference component to produce resultant signals with less interference. The processor...
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7489747 |
Decision directed flicker noise cancellation
A decision directed flicker noise canceller for reducing flicker noise in a modulated input signal according to an embodiment of the present invention includes a decision circuit, a conversion...
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7486726 |
Filter structure for iterative signal processing
The present invention relates to improved multiple access communications. In one form, the invention relates to an improved signal processing method and apparatus for an iterative method of...
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7486642 |
Apparatus and method for receiving control message on packet data control channel in a mobile communication system supporting packet data service
An apparatus and method for receiving a packet data control channel in a mobile communication system that transmits packet data and has the packet data control channel for transmitting control...
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7483685 |
Method and device for wavelet denoising
The present invention provides for a digital receiver arrangement and related method, in which a digital receiver arrangement comprises a tuner/demodulator circuit, an analogue-to-digital...
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7480235 |
OFDM transmitter and OFDM receiver
An OFDM transmitter transmits an OFDM signal by a frame having a plurality of transmission symbol periods constituted of an effective symbol period for transmitting an information bit and a guard...
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7474691 |
Sub-symbol parallel interference cancellation
Reduction of multiple access interference, in one example for asynchronous CDMA systems using long codes. In one aspect, parallel interference cancellation (PIC) implements a decoupled estimate,...
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7474883 |
Radio communication received having automatic gain control based on measured and received energy
A receiver in a radio communication system and method for optimizing a use of an available dynamic range. The receiver has an automatic gain controller in an automatic gain control loop, a first...
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7471702 |
Methods and apparatus for implementing, using, transmitting, and/or receiving signals at least some of which include intentional null tones
Base stations transmit strip signals using strip signal segments and self supporting modulation scheme techniques facilitating rapid channel estimate. A strip segment occupies one OFDM symbol time...
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7469003 |
Method and apparatus for adaptive channel equalization using decision feedback
The equalizer circuit ( 200 ) equalizes the channel prior to despreading thereby restoring the orthogonality of signals that typically exists in the forward link of CDMA systems and thus...
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7466771 |
Block edge effects in iterative diversity reception
Methods, apparatuses, and systems are presented for deriving data from a composite signal by processing multiple blocks of symbols, involving (a) receiving a composite signal comprising...
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