Reliable relay assisted wireless multicast using network coding
Reliable relay assisted wireless multicast using network coding
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DOI：
10.1109/jsac.2009.090615
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发表时间：
2009-06
影响因子：
16.4
通讯作者：
Pingyi Fan;Zhi Chen;W. Chen;K. Letaief
中科院分区：
文献类型：
--
作者：
Pingyi Fan;Zhi Chen;W. Chen;K. Letaief
我们首先考虑一个由一个源、两个目的地和一个中继组成的拓扑。在这种拓扑结构下，基于网络编码的合作组播（NCBC）方案可以实现2个分集顺序。本文对NCBC协议进行了系统的讨论和分析，并与其他两种组播协议进行了性能比较。评估了每个协议的吞吐量、延迟和队列长度。此外，我们提出了一个最优方案，以最大限度地提高吞吐量受延迟和队列长度的约束。数值结果表明，网络编码可以在吞吐量方面带来显著的提高。
We first consider a topology consisting of one source, two destinations and one relay. For such a topology, it is shown that a network coding based cooperative (NCBC) multicast scheme can achieve a diversity order of two. In this paper, we discuss and analyze NCBC in a systematic way as well as compare its performance with two other multicast protocols. The throughput, delay and queue length for each protocol are evaluated. In addition, we present an optimal scheme to maximize throughput subject to delay and queue length constraints. Numerical results will demonstrate that network coding can bring significant gains in terms of throughput.