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arXiv 0901.1655cs.ITmath.IT
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网络编码中的多点编码:界和一种多级构造

Multishot Codes for Network Coding: Bounds and a Multilevel Construction

Roberto W. Nobrega, Bartolomeu F. Uchoa-Filho

摘要:

Koetter和Kschischang引入子空间信道作为执行随机线性网络编码的多播网络的从源节点到汇聚节点的通信信道的适当模型。到目前为止,注意力已经被给予了一次子空间码,即,仅使用子空间信道一次的码。与此相反,本文探讨了使用子空间信道一次以上的想法,并研究了所谓的多拍子空间码。我们提出的问题,一个激励的例子,代码的大小的上下界,和一个多级构造的代码块编码调制的基础上的定义。

英文摘要:

The subspace channel was introduced by Koetter and Kschischang as an adequate model for the communication channel from the source node to a sink node of a multicast network that performs random linear network coding. So far, attention has been given to one-shot subspace codes, that is, codes that use the subspace channel only once. In contrast, this paper explores the idea of using the subspace channel more than once and investigates the so called multishot subspace codes. We present definitions for the problem, a motivating example, lower and upper bounds for the size of codes, and a multilevel construction of codes based on block-coded modulation.

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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