摘要
编码协作(CC)方式相较于放大转发(AF)、译码转发(DF)等协议,系统性能更加优越,但仍存在不足。针对协作伙伴只有正确译码时才决定参与协作转发的缺陷,提出一种链路自适应再生编码协作(LAR-CC)方案。将链路自适应再生(LAR)协议引入CC系统,通过比较中继两端信道质量情况调整中继转发信号的功率。该方式在系统信道质量可观的情况下,较传统编码协作方式性能优异。仿真实验表明,当BER=10^(-4)时,该方案较传统CC方式有约3.5 dB的性能增益。
Compared to the protocols such as AF(Amplify and Forward)and DF(Decode and Forward)protocols,the system performance of CC(Coded Cooperation)is more superior,but there are still shortcomings.In view of the fact that the collaboration partners can only determine to participate in cooperative forwarding when they are correctly decoded,a LAR-CC(Link Adaptive Regenerative Coded Cooperation)scheme is proposed.The LAR(Link Adaptive Regeneration)protocol is introduced into the CC system to adjust the power of the relay and forward signal by comparing the channels quality at both ends of the relay.Compared with the traditional coded cooperative approach,this proposed scheme has excellent performance under the condition of considerable system channel quality.Simulation experiments indicate that,when BER=10-4,the scheme has a performance gain of about3.5dB compared with the traditional CC mode.
作者
张望
刘顺兰
ZHANG Wang;LIU Shun-lan(Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)
出处
《通信技术》
2018年第3期522-526,共5页
Communications Technology
关键词
编码协作
放大转发
译码转发
链路自适应再生协议
CC (Coded Cooperation)
AF (Amplify and Forward)
DF (Decode and Forward)
LAR (Link Adaptive Regeneration) protocol
