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arXiv cs/0411006cs.ITmath.IT
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两类(d,k)约束的码构造的容量实现

Capacity Achieving Code Constructions for Two Classes of (d,k) Constraints

Yogesh Sankarasubramaniam, Steven W. McLaughlin

摘要:

在本文中,我们提出了两个低复杂度的算法,实现容量的无噪声(d,k)约束的信道时,k=2d+1,或当k-d+1不是素数。第一种算法称为符号滑动,是Aviran等人[1]介绍的比特翻转算法的广义版本。除了实现(d,2d+1)约束的容量之外,它在其他情况下接近容量。第二种算法是基于交织的,并且是由Bender和Wolf [2]引入的比特填充算法的广义版本。该方法使用少于k-d个偏置比特流来实现对于k-d+1不是素数的(d,k)约束的容量。具体地,针对(d,d+2-m-1)约束1 \le m< \infty的编码器仅需要m个偏置比特流。

英文摘要:

In this paper, we present two low complexity algorithms that achieve capacity for the noiseless (d,k) constrained channel when k=2d+1, or when k-d+1 is not prime. The first algorithm, called symbol sliding, is a generalized version of the bit flipping algorithm introduced by Aviran et al. [1]. In addition to achieving capacity for (d,2d+1) constraints, it comes close to capacity in other cases. The second algorithm is based on interleaving, and is a generalized version of the bit stuffing algorithm introduced by Bender and Wolf [2]. This method uses fewer than k-d biased bit streams to achieve capacity for (d,k) constraints with k-d+1 not prime. In particular, the encoder for (d,d+2^m-1) constraints, 1\le m<\infty, requires only m biased bit streams.

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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