基于用户协同传输的网络编码容量及中断概率分析

2010 5th International ICST Conference on Communications and Networking in China Pub Date : 2010-08-01 DOI:10.4108/CHINACOM.2010.140

Yinglei Teng, Mei Song, Yong Zhang, Yuanyuan Liu, Junde Song

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引用次数: 0

摘要

这两种用户合作传输情境与网络编码的对称特性相吻合，使得进行分布式随机编码成为可能，从而探索了合作分集和网络编码分集。本文从信道容量和中断概率两方面对基于OFDMA的正交物理层信道下基于网络编码的双用户协作进行了性能分析。设计了精确容量的表达式，并给出了带下界的停电概率的封闭形式。与传统的用户协作传输相比，基于nc_2用户协作传输的容量提高了11.8%，中断概率降低了50%。

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Capacity and outage probability analysis of network coding based user cooperation transmission

The two user cooperative transmission context coincides with symmetric feature of network coding (NC), which makes it possible to perform distributed random coding, thus exploring both the cooperative diversity and the network coding diversity. In this paper, we provide performance analysis of network coding based two-user cooperation under an OFDMA based orthogonal physical layer channel, in terms of the channel capacity and outage probability. Expressions for exact capacity are devised and closed form of outage probability with lower bound is presented. Compared with the conventional user cooperation transmission, the NC_based two-user cooperation brings 11.8% higher capacity and 50% lower outage probability.

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2010 5th International ICST Conference on Communications and Networking in China

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