J. Cai, M. Tomlinson, C. Tjhai, M. Ambroze, M. Ahmed
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引用次数: 2
摘要
RS码C(n, k, n - k + 1)是常用的差错控制码，因为它们是最大距离可分离码(MDS)。在二进制擦除信道上，RS码执行最佳结果并接近最大信道容量。本文将RS码应用于非相关平坦瑞利衰落信道上的分组无线传输。结果表明，采用RS码与BCH码串联并采用硬判决译码比采用位交错LDPC码进行软判决译码获得更好的译码效果。BCH码用于纠正由于噪声引起的少量错误，也用于检测深度渐褪的存在，在这种情况下，整个数据包被擦除。被擦除的包被RS码校正。我们还讨论了总体码率对净性能的影响。
Comparison of Concatenated Reed-Solomon Coding with Hard-decision to Soft-decision LDPC Coding for the Rayleigh Fading Channel
Reed-Solomon (RS) codes C(n, k, n - k + 1) are commonly used error-control codes, because they are Maximum Distance Separable (MDS) codes. Over a Binary Erasure Channel, RS codes perform with optimal results and approach the maximum channel capacity. In this paper, we apply RS codes to packet wireless transmission over the uncorrelated flat Rayleigh fading channel. It is shown that by using an RS code concatenated with BCH codes and using hard decisions, better results are obtained than using bit interleaved LDPC codes, with soft-decision decoding. The BCH code is used to correct small numbers of errors due to noise and also to detect the presence of deep fades, in which case the entire packet is erased. Erased packets are corrected by the RS code. We also discuss the effect of overall code rate on the net performance.
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