基于网络编码的多中继协作通信研究

RESEARCH ON THE MULTI-DELAY COOPERATIVE COMMUNICATION BASED ON NETWORK CODING

本文介绍了基于两用户—两中继—单目的节点的协作中继模型,将协作分集与网络编码结合起来,针对传统的两中继方案、模拟网络编码的两中继方案以及机会式网络编码的两中继方案,分析比较了这3种方案的中断概率、信噪比和网络吞吐量等性能。经过仿真结果编码,在系统中断概率一定的情况下,机会式网络编码可以提升系统吞吐量,但编码要求复杂,其次是模拟网络编码。在信噪比一定的情况下,传统方案中断概率最低,但增加了时延,需要消耗更多的能量。

This paper introduces the model of cooperative communication with two source-two relay-one destination. Combine with the cooperative diversity and network coding,the effects on probability of system outage,SNR and network throughput are analysis and compared among traditional scheme,analog network coding scheme and opportunistic network coding scheme. The simulation results shows that under the certain of system outage probability,opportunistic network coding can enhance system throughput,but the complexity is the highest,the secondly is analog network coding. Under the certain of SNR,the traditional scheme has the lowest outage probability,but it has a higher delay and consume more emergy.