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适用于无线双向中继信道的机会协作网络编码

DOI: 10.13190/jbupt.200804.117.lül, PP. 117-121

Keywords: 协作分集,网络编码,误比特率,网络编码增益

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Abstract:

提出了一种机会协作网络编码(OCNC),该技术将协作分集技术和网络编码技术有机结合,能克服无线信道衰落、提高系统资源利用率和网络吞吐。针对无线双向中继信道中端到端信息交换的情形,分别分析了3步、2步OCNC的误比特率(BER)性能和获取的网络编码增益,结果表明,相对于传统的数据交换方案,3步、2步机会协作网络编码在获得全分集(获得的分集阶数为参与协作的节点数)的同时,也分别获得了4/3倍和2倍的渐近网络编码增益,由于多个协作节点的机会中继,OCNC的网络编码增益在中间SNR区域更为突出。

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