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arXiv 1503.05696cs.ITcs.NIcs.PFmath.IT
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随机线性网络编码在双源单中继网络中的性能分析

Performance Analysis of Random Linear Network Coding in Two-Source Single-Relay Networks

Amjad Saeed Khan, Ioannis Chatzigeorgiou

摘要:

本文考虑多址接入中继信道中的设置,其中两个源节点发送数据包到目的地节点,直接和通过中继节点,在数据包擦除信道。在源节点处使用会话内网络编码,并且在中继节点处采用会话间网络编码来组合两个源节点的恢复的源分组。在这项工作中,我们调查的网络编码系统的性能方面的概率,目的地节点将成功地恢复两个源节点的源数据包。我们建立我们的分析在有限域上的随机矩阵的基本概率表达式,我们推导出系统和非系统网络编码的情况下的系统性能的上界。仿真结果表明,该上界是非常严格的,准确地预测在目的节点的解码概率。我们的分析还揭示了系统的网络编码在源节点相比,非系统传输的明显好处。

英文摘要:

This paper considers the multiple-access relay channel in a setting where two source nodes transmit packets to a destination node, both directly and via a relay node, over packet erasure channels. Intra-session network coding is used at the source nodes and inter-session network coding is employed at the relay node to combine the recovered source packets of both source nodes. In this work, we investigate the performance of the network-coded system in terms of the probability that the destination node will successfully recover the source packets of the two source nodes. We build our analysis on fundamental probability expressions for random matrices over finite fields and we derive upper bounds on the system performance for the case of systematic and non-systematic network coding. Simulation results show that the upper bounds are very tight and accurately predict the decoding probability at the destination node. Our analysis also exposes the clear benefits of systematic network coding at the source nodes compared to non-systematic transmission.

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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