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Class Information
Number: 375/262
Name: Pulse or digital communications > Systems using alternating or pulsating current > Plural channels for transmission of a single pulse train > Quadrature amplitude modulation > Maximum likelihood decoder or viterbi decoder
Description: Subject matter for choosing an estimate code word for each possible received sequence of a demodulation output.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620128 |
Minimum mean squared error approach to interference cancellation and maximum likelihood decoding of space-time block codes |
Nov. 17, 2009 |
| 7620879 |
Method of detecting occurrence of error event in data and apparatus for the same |
Nov. 17, 2009 |
| 7617440 |
Viterbi traceback initial state index initialization for partial cascade processing |
Nov. 10, 2009 |
| 7616636 |
Method and device for receiving data blocks |
Nov. 10, 2009 |
| 7616701 |
Zero excess bandwidth modulation |
Nov. 10, 2009 |
| 7609787 |
Reception of a signal modulated according to a multilevel coding technique |
Oct. 27, 2009 |
| 7609777 |
Maximum likelihood a posteriori probability detector |
Oct. 27, 2009 |
| 7609615 |
Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system |
Oct. 27, 2009 |
| 7603611 |
Maximum likelihood decoding device, signal evaluating method, and reproducing apparatus |
Oct. 13, 2009 |
| 7602863 |
Method and apparatus for providing iterative timing recovery |
Oct. 13, 2009 |
| 7602696 |
Adaptive guard intervals in OFDM systems |
Oct. 13, 2009 |
| 7599441 |
Low complexity soft-input Viterbi decoding for digital communication systems |
Oct. 6, 2009 |
| 7596182 |
Optimum symbol timing estimation with various performance measures for OFDM systems |
Sep. 29, 2009 |
| 7593475 |
Space-time and/or space-frequency block coding using complex signal swapping |
Sep. 22, 2009 |
| 7594161 |
Map decoding |
Sep. 22, 2009 |
| 7594162 |
Viterbi pretraceback for partial cascade processing |
Sep. 22, 2009 |
| 7590928 |
Apparatus and method for Viterbi decoding |
Sep. 15, 2009 |
| 7587004 |
Method for decoding data using windows of data |
Sep. 8, 2009 |
| 7586991 |
Method and apparatus for calculating likelihood metric of a received signal in a digital communication system |
Sep. 8, 2009 |
| 7583744 |
Method and apparatus for computing soft decision input metrics to a turbo decoder |
Sep. 1, 2009 |
| 7584407 |
Decoder and method for performing decoding operation using map algorithm in mobile communication system |
Sep. 1, 2009 |
| 7580469 |
Communication link control using iterative code metrics |
Aug. 25, 2009 |
| 7577208 |
VSB transmission system |
Aug. 18, 2009 |
| 7571376 |
Viterbi decoder for executing trace-back work in parallel and decoding method |
Aug. 4, 2009 |
| 7571375 |
Methods for message passing decoding using simultaneous memory accesses |
Aug. 4, 2009 |
| 7571369 |
Turbo decoder architecture for use in software-defined radio systems |
Aug. 4, 2009 |
| 7570578 |
Orthogonal frequency division demodulator, method and computer program product |
Aug. 4, 2009 |
| 7564913 |
Divisionless baseband equalization in symbol modulated communications |
Jul. 21, 2009 |
| 7564930 |
Method and apparatus for implementing a traceback processor for trellis decoding in a Viterbi decoder |
Jul. 21, 2009 |
| 7562021 |
Modification of codewords in dictionary used for efficient coding of digital media spectral data |
Jul. 14, 2009 |
| 7558297 |
Robust digital communication system |
Jul. 7, 2009 |
| 7555080 |
Digital broadcasting receiving system and equalizing method thereof |
Jun. 30, 2009 |
| 7555071 |
Method and apparatus for non-linear scaling of log likelihood ratio (LLR) values in a decoder |
Jun. 30, 2009 |
| 7551692 |
Frequency recovery apparatus and method for use in digital broadcast receiver |
Jun. 23, 2009 |
| 7551695 |
Verification of the antenna weights of the base station in a UMTS mobile radio receiver by use of the Viterbi algorithm with fed-back transmission diversity |
Jun. 23, 2009 |
| 7552379 |
Method for iterative decoding employing a look-up table |
Jun. 23, 2009 |
| 7545890 |
Method for upstream CATV coded modulation |
Jun. 9, 2009 |
| 7539273 |
Method for separating interfering signals and computing arrival angles |
May. 26, 2009 |
| 7533329 |
Method for simplifying a viterbi decoder and a simplified viterbi decoder using the same |
May. 12, 2009 |
| 7529323 |
Quaternary precoded continuous phase modulation soft bit metric demodulator |
May. 5, 2009 |
| 7529324 |
Decoder, decoding method, and disk playback device |
May. 5, 2009 |
| 7530010 |
Hybrid trace back apparatus and high-speed viterbi decoding system using the same |
May. 5, 2009 |
| 7526712 |
Deinterleaving apparatus and method using inner memory and outer memory |
Apr. 28, 2009 |
| 7526037 |
Reduced complexity detector for multiple-antenna systems |
Apr. 28, 2009 |
| 7522678 |
Method and apparatus for a data-dependent noise predictive viterbi |
Apr. 21, 2009 |
| 7522680 |
Apparatus, system, and method for asymmetric maximum likelihood detection |
Apr. 21, 2009 |
| 7519897 |
Decoding apparatus and decoding method |
Apr. 14, 2009 |
| 7519088 |
Robust digital communication system |
Apr. 14, 2009 |
| 7515659 |
Decoding techniques for multi-antenna systems |
Apr. 7, 2009 |
| 7512870 |
Method and system for improving the performance of a trellis-based decoder |
Mar. 31, 2009 |
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