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Open Access

Generalized Low-Density Parity-Check Coding Scheme with Partial-Band Jamming

Qi Li, Xinru Qu, Liuguo Yin( ), Jianhua Lu
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
School of Aerospace, Tsinghua University, Beijing 100084, China
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Abstract

In this study, a class of Generalized Low-Density Parity-Check (GLDPC) codes is designed for data transmission over a Partial-Band Jamming (PBJ) environment. The GLDPC codes are constructed by replacing parity-check code constraints with those of nonsystematic Bose-Chaudhuri-Hocquenghem (BCH), referred to as Low-Density Parity-Check (LDPC)-BCH codes. The rate of an LDPC-BCH code is adjusted by selecting the transmission length of the nonsystematic BCH code, and a low-complexity decoding algorithm based on message-passing is presented that employs A Posteriori Probability (APP) fast BCH transform for decoding the BCH check nodes at each decoding iteration. Simulation results show that the LDPC-BCH codes with a code rate of 1/8.5 have a bit error rate performance of 1 ×10 -6 at signal-noise-ratios of -6.97 dB, -4.63 dB, and 2.48 dB when the fractions of the band jammed are 30%, 50%, and 70%, respectively.

Keywords

Generalized Low-Density Parity-Check (GLDPC) code constraintnonsystematic BCH codea posteriori probability fast BCH transform

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Tsinghua Science and Technology
Volume 19 Issue 2,
April 2014
Pages 203-210
DOI: 10.1109/TST.2014.6787374
Cite this article:
Li Q, Qu X, Yin L, et al. Generalized Low-Density Parity-Check Coding Scheme with Partial-Band Jamming. Tsinghua Science and Technology, 2014, 19(2): 203-210. https://doi.org/10.1109/TST.2014.6787374

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Received: 17 April 2013
Revised: 26 November 2013
Accepted: 25 December 2013
Published: 15 April 2014
© The author(s) 2014
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