六周长低密度校验码的多载波跳频扩频系统

2009 International Multimedia, Signal Processing and Communication Technologies Pub Date : 2009-03-14 DOI:10.1109/MSPCT.2009.5164224

F. Ghani, A. Yahya

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引用次数: 2

摘要

为了提高系统的抗干扰能力，提出了一种采用六周低密度校验码的多载波跳频扩频系统(MCFH-SS)的前向纠错方案。本文还对列权为3的六环LDPC码在给定分数带宽(ρ)下的误码率(BER)进行了计算。研究发现，在加性高斯白噪声(AWGN)信道上存在部分频带噪声干扰(PBNJ)时，采用LDPC码的MCFH-SS系统的性能明显优于采用快速跳频扩频(FFH-SS)的LDPC码系统。ρ =1时，MCFH-SS和FFH-SS体系的误码率分别约为10−3和10−2。这表明了六周长LDPC码的MCFH-SS系统的有效性。

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Multi-carrier frequency hopping spread spectrum system with girth-six low-density parity-check codes

In this paper, a multicarrier frequency hopping spread spectrum (MCFH-SS) system with girth-six low-density parity-check (LDPC) codes is developed as forward error correction scheme to improve its anti-jamming (AJ) capabilities. The paper also evaluates the bit error rate (BER) of girth-six LDPC codes with a column weight 3 for the given values of fractional bandwidth (ρ). It is found that the performance of MCFH-SS system with LDPC codes is significantly better than the system employing fast frequency hopping spread spectrum (FFH-SS) with girth-six LDPC codes in the presence of partial band noise jamming (PBNJ) over Additive White Gaussian Noise (AWGN) channel. At ρ =1, the BER of MCFH-SS and FFH-SS system is approximately 10−3 and 10−2 , respectively. This shows the effectiveness of MCFH-SS system with girth-six LDPC codes.

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2009 International Multimedia, Signal Processing and Communication Technologies

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