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Code Designs for Cooperative Communication

机译:合作交流的代码设计

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The goal of this article is to discuss the implementation of two cooperative protocols - decode-and-forward (DF) and estimate-and-forward (EF). In each case, the starting point is an information theoretic random coding scheme, which motivates a practical code construction. Low-density parity check (LDPC) codes are used as components in both protocols. In DF relaying, the problem boils down to a search for multi-rate LDPC codes that simultaneously perform well for the source-relay and the source- destination links. On the other hand, in EF relaying, the challenge is to design an efficient quantizer for forming a compressed estimate at the relay. The performance of each scheme is comparable to theoretical limits.
机译:本文的目的是讨论两种协作协议的实现-解码转发(DF)和估计转发(EF)。在每种情况下,起点都是信息理论随机编码方案,该方案激励了实用的代码构造。低密度奇偶校验(LDPC)代码在两种协议中均用作组件。在DF中继中,问题归结为寻找同时对源中继和源-目的链路表现良好的多速率LDPC码。另一方面,在EF中继中,挑战是设计一种有效的量化器以在中继处形成压缩估计。每个方案的性能可与理论极限相比。

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