|
Match
|
Document |
Document Title |
|
|
7620882 |
Decoder and decoding method for decoding a code by selecting a path out of paths in a trellis diagram
A decoder decodes a code by selecting, based on a predetermined condition, a path out of paths representing a transition of each of states in a trellis diagram. A storing unit stores, when a path...
|
|
|
7620879 |
Method of detecting occurrence of error event in data and apparatus for the same
A method of detecting an occurrence of an error event in data and an apparatus for the same are provided. The method includes: preparing an error detection code wherein syndrome sequences for...
|
|
|
7620129 |
RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying...
|
|
|
7620128 |
Minimum mean squared error approach to interference cancellation and maximum likelihood decoding of space-time block codes
Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions when the base station has a plurality of antennas, and...
|
|
|
7620121 |
DC balance compensation for AC-coupled circuits
A receiver has a first input port and a second input port both coupled to a differential amplifier through first and second input capacitors. A bias circuit coupled to the core side of the first...
|
|
|
7620102 |
Digital broadcasting transmission and reception system
A digital broadcasting transmission and reception system includes a digital broadcasting transmission apparatus and a digital broadcasting reception apparatus. The digital broadcasting transmission...
|
|
|
7617440 |
Viterbi traceback initial state index initialization for partial cascade processing
This invention provides the correct Viterbi decode traceback starting index is obtained for all constraint lengths and frame sizes. Reverse transpose operations that depend on the last active...
|
|
|
7616713 |
System and method for forward and backward recursive computation
A system and method is provided for improved and efficient forward and backward recursive computations that may be used, for example, with turbo code decoding applications. The invention performs...
|
|
|
7616699 |
Method of soft bit metric calculation with direct matrix inversion MIMO detection
A telecommunication MIMO receiver implements soft bit metric calculation with direct matrix inversion MIMO detection. The receiver has a detector that detects data symbols in a received signal by...
|
|
|
7613228 |
M-Algorithm multiuser detector with correlation based pruning
A multiuser detector system with correlation based pruning including a parameter estimation module adapted to receive complex signals, and to produce estimated signature waveforms for each of K...
|
|
|
7609788 |
Receiver apparatus using maximum-likelihood-determination
A metric calculating unit calculates a metric based on a provisional determination of a transmission signal and a reception signal. A lattice-point-range setting/estimate-symbol generating unit...
|
|
|
7609787 |
Reception of a signal modulated according to a multilevel coding technique
A method for receiving a signal modulated according to a multilevel coding technique, comprising at least two coding levels each having different noise robustness, said signal including a plurality...
|
|
|
7609777 |
Maximum likelihood a posteriori probability detector
A communication device comprising an ML-APP detector coupled to at least two antennas. The ML-APP detector comprises at least one Hx unit coupled to at least one LLR unit. The Hx unit generates a...
|
|
|
7609615 |
Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system
A method and apparatus for performing channel compensation and symbol demodulation using an estimated channel impulse response during coherent demodulation of a received Orthogonal Frequency...
|
|
|
7607052 |
Physical coding sublayer for a multi-pair gigabit transceiver
A physical coding sublayer (PCS) transmitter circuit generates a plurality of encoded symbols according to a transmission standard. A symbol skewer skews the plurality of encoded symbols within a...
|
|
|
7606705 |
Speech data receiver with detection of channel-coding rate
Disclosed is a system and method for channel decoding speech frames in a receiver capable of multiple (M) codec modes, wherein channel encoded speech frames include an inband bit portion and a...
|
|
|
7606487 |
Distortion measurement in optical communication systems
The distortion component of an optical signal received from an optical transmission system, such as an all-optical system, subject to noise and amplitude distortion components, can be evaluated by...
|
|
|
7606336 |
Viterbi decoder using circulation type decoding units connected in parallel
An analog Viterbi decoder for decoding an analog signal is provided that includes a plurality of decoding units, provided with a plurality of processing parts each having a plurality of cells...
|
|
|
7606320 |
Apparatus and method for space-frequency block coding/decoding in a communication system
An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (N t ) Tx antennas are provided. In a transmitter using N t transmit antennas, a pre-coder...
|
|
|
7605727 |
Method, medium and apparatus for quantization encoding and de-quantization decoding using trellis
Provided are a method and apparatus for quantization encoding and de-quantization decoding using a trellis. Unlike a trellis coded quantization (TCQ) index, by classifying quantization levels to...
|
|
|
7603611 |
Maximum likelihood decoding device, signal evaluating method, and reproducing apparatus
The invention relates to a maximum likelihood decoding device that performs Partial Response Maximum Likelihood decoding on a reproduced data signal from a recording media or another source. The...
|
|
|
7602863 |
Method and apparatus for providing iterative timing recovery
A method includes the steps of receiving a signal indicative of data bits, and performing per survivor processing-iterative timing recovery (PSP-ITR) on the received signal to generate...
|
|
|
7600179 |
Sparse maximum likelihood decoder for block codes
A method is provided to decode data encoded by any block code in a manner that substantially improves the error correction capability of the block codes, and that is independent of the encoder. The...
|
|
|
7599452 |
Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals
A method and system of improving sensitivity in the demodulation of a received signal over an arbitrary measurement time epoch, the method comprising the steps of: correlating the received signal...
|
|
|
7599441 |
Low complexity soft-input Viterbi decoding for digital communication systems
A DVB-H bit-interleave coded modulation/demodulation system and method includes a convolutional encoder; an interleaver operatively connected to the convolutional encoder; a quadrature amplitude...
|
|
|
7596196 |
Timing recovery in error recovery for iterative detection
A decoding system includes a timing loop for use in error recovery mode operations, in which “fast decode” bit values that are used for timing recovery purposes in the normal modes of operation...
|
|
|
7596191 |
Apparatus, method and computer program product providing a computationally efficient maximum likelihood joint synchronization and channel estimation algorithm
A method, computer program and apparatus operate so as to execute a two-dimensional (2-D) M survivor multi-resolution search algorithm and procedure for a signal received over a channel. The method...
|
|
|
7596182 |
Optimum symbol timing estimation with various performance measures for OFDM systems
A receiver in an OFDM system may include a multi-mode estimator to estimate symbol timing offset for different performance measures. In addition to a maximum likelihood estimation mode, the...
|
|
|
7594162 |
Viterbi pretraceback for partial cascade processing
This invention modifies Viterbi decoding to improve BER. Within the state metric unit cascade block, this invention forces the unused ACS units decision bits to a 0 for the top rail and a 1 for the...
|
|
|
7594161 |
Map decoding
A method of approximating the generation of a logarithm of a sum of exponents, for use in a log-MAP decoding operation, by performing a first operation on the data, calculating a correction term in...
|
|
|
7593490 |
Joint synchronizer and decoder
A joint synchronizer and decoder that implements two decision aided processes, which are referred to as “decision aided candidate selection” and “decision aided synchronization and...
|
|
|
7593475 |
Space-time and/or space-frequency block coding using complex signal swapping
A method of space-time and/or space-frequency block encoding begins by receiving at least two complex signals, wherein each of the at least two complex signals includes a real component and an...
|
|
|
7590928 |
Apparatus and method for Viterbi decoding
A Viterbi decoding apparatus and a method thereof are disclosed. According to each partial surviving path formed by the decision information of every k continuous symbols of a symbol sequence, the...
|
|
|
7590206 |
Equalization apparatus and equalization method
An equalization apparatus and method estimate a channel response based on a received signal and a reference signal. Equalization processing estimates intersymbol interference with the received...
|
|
|
7590203 |
Joint symbol, amplitude, and rate estimator
The system in one embodiment relates to tightly integrating parameter estimation, symbol hypothesis testing, decoding, and rate identification. The present invention provides Turbo-decoding for...
|
|
|
7590197 |
Correction circuit for improving performance in a channel decoder
A receiver for a mobile communication system includes a channel equalizer for receiving a burst and generating a soft decision output associated with the burst, a soft decision correction circuit...
|
|
|
7587211 |
Method and system for adaptive multi rate (AMR) and measurements downlink adaptation
Various aspects of a method and system for adaptive multi rate and measurements adaptation may include a processor that enables computation of at least one signal level measurement for at least one...
|
|
|
7587005 |
Exploiting known padding data to improve block decode success rate
A method and system of decoding a convolutionally encoded data block having known padding bits. A Viterbi decoder is constrained to a state corresponding to k−1 padding bits immediately adjacent...
|
|
|
7587004 |
Method for decoding data using windows of data
The present invention relates to a method for decoding data, said method using windows (WID) of input data. The invention is characterized in that it comprises for a current window the steps...
|
|
|
7587003 |
Method and device for carrier-frequency synchronization of a vestigial-sideband-modulated signal
A method and a device for carrier-frequency synchronization of a vestigial-sideband-modulated received signal (r VSB (t)) with a carrier signal (e j(2π(f T +Δf)t+Δφ) ), which is affected by a...
|
|
|
7586991 |
Method and apparatus for calculating likelihood metric of a received signal in a digital communication system
A likelihood metric calculation method including: estimating a channel of a received signal and generating a channel estimate; compensating a channel of the received signal according to the channel...
|
|
|
7586706 |
Method for checking the quality of servo gray codes
A dynamic threshold detector for a magnetic storage medium comprises a transition detector that receives data comprising pairs of values based on data received from the magnetic storage medium,...
|
|
|
7584407 |
Decoder and method for performing decoding operation using map algorithm in mobile communication system
A turbo decoder and a decoding method are disclosed, which use a Maximum A Posteriori (MAP) algorithm in order to perform iterative decoding. The method has the steps of sequentially receiving...
|
|
|
7583763 |
Multi input multi output wireless communication reception method and apparatus
A Multi Input Multi Output (MIMO) Wireless Communication Reception Method and Apparatus are proposed whereby in a 2-way wireless communication system with scattering propagation channels, where...
|
|
|
7583762 |
Reduced-complexity multiple-input, multiple-output detection
A wireless receiver detects signals generated with a multiple-input, multiple-output (MIMO) transmitter. The receiver applies maximum-likelihood detection (MLD) for soft-output signal detection,...
|
|
|
7583757 |
Joint symbol, amplitude, and rate estimator
The system in one embodiment relates to tightly integrating parameter estimation, symbol hypothesis testing, decoding, and rate identification. The present invention provides Turbo-decoding for...
|
|
|
7583744 |
Method and apparatus for computing soft decision input metrics to a turbo decoder
A method and apparatus for computing soft decision input metrics to a turbo decoder includes circuits associated with eight-ary phase shift keyed (8PSK) modulation and sixteen-ary quadrature...
|
|
|
7583741 |
Likelihood corrector and likelihood correction method
In an orthogonal frequency division multiplexing system using a scattered pilot signal, after equalization and Fourier transformation of the received signal, the pilot signals are extracted and...
|
|
|
7583729 |
Adaptive equalizer and related method thereof
An adaptive equalizer and the related method are disclosed. The adaptive equalizer is capable of adjusting its own equalization coefficients, and includes a reference signal generator for...
|
|
|
7580485 |
Address generator for LDPC encoder and decoder and method thereof
A data transmission system is provided for transmitting user data to and receiving data from a communication channel, comprising a first address generator to generate a first address in accordance...
|