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'Errors-and-erasures' decoding performance of RS coded DS-CDMA using M-ary orthogonal signalling

机译：使用M-ARY ORTONOG COMBING的“错误 - 擦除拒绝”RS编码DS-CDMA的性能

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摘要

In this contribution we investigate the performance of RS coded DS-CDMA using M-ary orthogonal signaling over multipath Rayleigh fading channels. 'Errors-And-Erasures (EAE)' RS decoding is considered, where erasures are declared based on the joint Maximum Output and Ratio Threshold Test (MOR-TT). Two classes of diversity reception techniques suitable for noncoherent M-ary detection are invoked, namely either Equal Gain Combining (EGC) or Selection Combining (SC) and their related performance is evaluated for both uncoded and coded DS-CDMA systems. The performance of the proposed MORTT technique is compared to that of the Ratio Threshold Test (RTT) and the Output Threshold Test (OTT), as well as that of 'Error-Correction-Only (ECO)' decoding. The numerical results show that when using EAE decoding, RS codes of a given code rate are capable of achieving a significantly higher coding gain than without erasure information. Furthermore, the MOR-TT technique outperforms both the RTT and the OTT techniques.
机译：在这一贡献中，我们研究了RS编码DS-CDMA的性能使用在多径瑞利衰落通道上使用M-ARY正交信号。考虑“错误和擦除（EAE）”RS解码，基于关节最大输出和比率阈值测试（MOR-TT）声明擦除。调用适合于非组织M-ARY检测的两类分集接收技术，即对未编码和编码的DS-CDMA系统评估相同的增益组合（EGC）或选择组合（SC）及其相关性能。将所提出的Mortt技术的性能与比率阈值测试（RTT）和输出阈值测试（OTT）的性能进行比较，以及“仅纠错（ECO）”解码。数值结果表明，当使用EAE解码时，给定码率的RS代码能够实现比没有擦除信息的较高的编码增益。此外，MOR-TT技术优于RTT和OTT技术。

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