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Comparison of distributed LDPC coding schemes for decode-and-forward relay channels

机译：解码和转发中继信道的分布式LDPC编码方案的比较

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摘要

In order to approach the theoretical limit of the decode-and-forward strategy for the half-duplex relay channel, distributed LDPC coding schemes have been proposed. In these schemes, the code applied at the source should be decodable at the relay to yield correct parity bits. With the help of the parity bits the destination should also be able to estimate the transmitted information correctly. For successful decoding the distributed coding scheme has to be designed jointly, requiring a high design complexity. As an alternative a distributed LDPC scheme based on puncturing is investigated, which requires only the design of one mother code. In this paper we compare three different approaches for designing distributed LDPC codes with respect to their performance and their design complexity.
机译：为了接近半双工中继信道的解码和转发策略的理论极限，已经提出了分布式LDPC编码方案。在这些方案中，源处应用的代码在中继站上应可解码，以产生正确的奇偶校验位。借助于奇偶校验位，目的地还应该能够正确估计传输的信息。为了成功解码，必须共同设计分布式编码方案，这需要很高的设计复杂度。作为替代方案，研究了基于打孔的分布式LDPC方案，该方案仅需要设计一个母码即可。本文针对性能和设计复杂性，比较了三种设计分布式LDPC码的方法。

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