基于分组压缩的协作中继技术研究

摘要

Cooperative Relaying based on Compressed Packet(CRCP) was proposed. The relay nodes encoded and retransmitted the received packet cooperatively. The number of transmitting slot was decreased and diversity gain combated wireless fading effectively. The spectral efficiency was analyzed in two-hop multiple access channels. The results show that at high SNR regimes,CRCP has the higher spectral efficiency compared with the traditional strategies. At low and medium SNR regimes,CRCP has the much better spectral efficiency in contrast with complex field network coded cooperation based on non-orthogonal transmission(CFNCO-NOT) strategies.%为提升多用户中继系统的传输效率,提出一种基于分组压缩的协作中继技术(CRCP,Cooperative Relaying based on Compressed Packet).中继节点对每个接收到的分组进行协作编码后发送,减少了分组传榆时间,同时可获取分集增益,以降低无线信道衰落的影响.以两跳、多接入模型为例,分析了该技术的频谱效率.结果表明,在高信噪比区域,相对于传统中继方案,CRCP的频谱效率提升了1/3；在中低信噪比区域,相比于非正交复数域网络编码方案,CRCP的频谱效率显著提高.