[1] He Shanbao, Zhang Li, Zhao Chunming,. Performance analysis of coded OFDM systemsusing a novel class of LDPC codes [J]. Journal of Southeast University (English Edition), 2004, 20 (4): 401-404. [doi:10.3969/j.issn.1003-7985.2004.04.002]

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Performance analysis of coded OFDM systemsusing a novel class of LDPC codes()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

20

Issue:

2004 4

Page:

401-404

Research Field:

Information and Communication Engineering

Publishing date:

2004-12-30

Info

Title:

Performance analysis of coded OFDM systemsusing a novel class of LDPC codes

Author(s):

He Shanbao;  Zhang Li;  Zhao Chunming

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Keywords:

orthogonal frequency division multiplexing(OFDM);  low-density parity-check(LDPC)codes;  permutation matrix;  construction;  iterative decoding

PACS:

TN929.533

DOI:

10.3969/j.issn.1003-7985.2004.04.002

Abstract:

A new method of constructing regular low-density parity-check(LDPC)codes is proposed. And the novel class of LDPC codes is applied in a coded orthogonal frequency division multiplexing(OFDM)system. This method extends the class of LDPC codes which can be constructed from shifted identity matrices. The method can avoid short cycles in Tanner graphs with simple inequation in the construction of shifting identity matrices, which makes the girth of Tanner graphs 8. Because of the quasi-cyclic structure and the inherent block configuration of parity-check matrices, the encoders and the decoders are practically feasible. They are linear-time encodable and decodable. The LDPC codes proposed have various code rates, ranging from low to high. They perform excellently with iterative decoding and demonstrate better performance than other regular LDPC codes in OFDM systems.

References:

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Memo

Memo:

Biographies: He Shanbao(1976—), male, graduate; Zhao Chunming(corresponding author), male, doctor, professor, cmzhao@seu.edu.cn.

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