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arXiv 0710.0900cs.ITmath.IT
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一种新的中继信道可扩展性方案

A New Achievability Scheme for the Relay Channel

Wei Kang, Sennur Ulukus

摘要:

在本文中,我们提出了一种新的编码方案的一般中继信道。该编码方案是块马尔可夫码的形式。发射器使用叠加马尔可夫码。中继器压缩接收到的信号,并将接收到的信号的压缩版本映射到以先前块的码字为条件的码字中。接收机在接收到所有B块之后执行联合解码。我们表明,这种编码方案可以被看作是一个推广的著名的压缩和转发(CAF)计划提出的封面和El Gamal。我们的编码方案提供了用于保留发射机和中继器的信道输入之间的相关性的选项,这在CAF方案中是不可能的。因此,我们提出的方案可能会产生一个更大的可实现的速率比CAF计划。

英文摘要:

In this paper, we propose a new coding scheme for the general relay channel. This coding scheme is in the form of a block Markov code. The transmitter uses a superposition Markov code. The relay compresses the received signal and maps the compressed version of the received signal into a codeword conditioned on the codeword of the previous block. The receiver performs joint decoding after it has received all of the B blocks. We show that this coding scheme can be viewed as a generalization of the well-known Compress-And-Forward (CAF) scheme proposed by Cover and El Gamal. Our coding scheme provides options for preserving the correlation between the channel inputs of the transmitter and the relay, which is not possible in the CAF scheme. Thus, our proposed scheme may potentially yield a larger achievable rate than the CAF scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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