Patent
Low-density parity check convolution code (ldpc-cc) decoding method and decoding device
Yutaka Murakami,Okamura Shuta,Masayuki Orihashi +2 more
- 29 Aug 2008
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TL;DR: A decoding device allowing a high-speed decoding operation is presented in this article, where the columns of the check matrix are delimited for each "(D+1) X N (N: natural number)" and the rows of the checked matrix are formed as the processing unit of the row processing operation and column processing operation.
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Abstract: A decoding device allowing a high-speed decoding operation. In a decoding section (215), if a degree of a check equation by a check matrix is D and the relationship between the check equation of the j + first row of the check matrix and the check equation of the jth row is shifted by n-bit, row processing operation sections (405#1 to 405#3) and column processing operation sections (410#1 to 410#3) perform the operation of a protograph in which the columns of the check matrix are delimited for each "(D+1) X N (N: natural number)," and the rows of the check matrix are delimited for each "(D+1) X N/n," and formed as the processing unit of the row processing operation and column processing operation.
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Citations
Patent
Coding and Decoding Method, Apparatus, and System for Forward Error Correction
Deyuan Chang,Fan Yu,Zhiyu Xiao +2 more
- 30 Jun 2014
TL;DR: In this article, a coding and decoding method, apparatus, and system for forward error correction is presented, which pertains to the field of communications, and is based on the LDPC convolutional code.
4
References
Time-varying periodic convolutional codes with low-density parity-check matrix
TL;DR: A class of convolutional codes defined by a low-density parity-check matrix and an iterative algorithm for decoding these codes is presented, showing that for the rate R=1/2 binary codes, the performance is substantially better than for ordinary convolutionian codes with the same decoding complexity per information bit.
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Design and Analysis of LDPC Convolutional Codes
Arvind Sridharan
- 13 Jan 2005
TL;DR: This dissertation describes techniques for the design of LDPC convolutional codes, and analyzes their distance properties and iterative decoding convergence thresholds, proving that time invariant LDPC codes are not asymptotically good.
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Low-density parity-check convolutional codes applied to packet based communication systems
Zhengang Chen,S. Bates,Xiaodai Dong +2 more
- 01 Jan 2005
TL;DR: It is shown that LDPC-CCs are more suited to packet based applications than LDPC block codes (LDPC-BCs) due to their ability to operate on arbitrary lengths of data, lower encoder complexity and the performance gain of presetting and termination.
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Patent
Decoding device and communication device
Rui Mitsubishi Denki Kabushiki Kaisha Sakai,Wataru Matsumoto,Yoshikuni Miyata,Hideo Yoshida,Takahiko Nakamura +4 more
- 01 Dec 2005
TL;DR: A decoding device includes a row processing unit (5) and a column processing unit(6) for calculating probability information by row processing and column processed based on Min-Sum algorithm and updating it for each one bit or each predetermined number of bits.
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A Comparison of ARA- and Protograph-Based LDPC Block and Convolutional Codes
Daniel J. Costello,Ali Emre Pusane,C.R. Jones,Dariush Divsalar +3 more
- 22 Oct 2007
TL;DR: The unwrapping process as well as the pipeline decoder that allows continuous decoding of LDPC convolutional codes are reviewed, with conjecture that this is due to the concatenation of many constraint lengths worth of received symbols in the pipeline decoding process.
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