基于喷泉编码的中继信道协作方案  

Cooperative Relay Channels using Fountain Codes

作　　者：冯贵年[1] 樊平毅[1] 周辉[1] 

机构地区：[1]清华大学电子工程系

出　　处：《飞行器测控学报》2011年第1期38-42,共5页Journal of Spacecraft TT&C Technology

摘　　要：首先给出了二进制删除中继信道下基于喷泉编码的多种协作方案，并依性能得出了最优方案，此后借鉴渐近最优喷泉编码的概念，将该最优协作方案扩展到无线中继信道中，并利用排队理论实现了中继节点的最优流量控制，给出了无线中继信道下的中继流控制协作方案。仿真结果表明，基于喷泉编码的中继信道协作方案有效地解决了中继缓存溢出问题，提高了信道的可达速率。Three cooperative schemes using fountain codes over binary erasure relay channels are first compared and the best one is chosen. Based on the obtained observation, the implementation and performance of the best scheme is extended to wireless relay channels adopting asymptotically optimal fountain codes, Moreover, a relay-flow control cooperative strategy is proposed for wireless relay channels by queue theory. Simulation confirms that the cooperative strategy controls information flow well while improving achievable rates of the channels.

关 键 词：中继信道 喷泉编码 协作通信 

分 类 号：V55[航空宇航科学与技术—人机与环境工程] TN925[电子电信—通信与信息系统]