摘要
提出了一种放大转发网络中的中继选择方案,假设目的节点配置多个天线,源节点和所有中继节点都配置单个天线,方案选择一组中继同时在相同的频带上放大转发接收到的源节点信息以最大化接收信噪比。与只择一个最优中继的方案相比,方案在保持满分集阶数的情况下获得了更高的中断容量和更优的误符号率性能。与只选择一个最优中继的方案相比,在0.000 01的误符号率水平上,少需要发射功率1.6 dB。
A relay selection scheme in amplify-and-forward relaying networks is proposed.On the assumption that multiple antennas are deployed at the destination node,and single antenna at the source node and the relay nodes,the proposed scheme chooses a group of relays,amplifies and forwards the received source-node information at the same frequency band,thus to maximize the receiving SNR.As compared with the prior work,the proposed scheme achieves better outage behavior while maintaining full diversity order.And the performance of symbol error rate（SER） is significantly improved.The proposed scheme has a transmit SNR loss of 1.6 dB if the symbol error rate is required to be 0.00001 for signals modulated by 4PSK.
出处
《通信技术》
2010年第12期94-96,共3页
Communications Technology
基金
国家自然科学基金资助项目(批准号:60971130)
基金项目名称:保密通信中多模噪声理论研究
关键词
中继网络
放大转发
中继选择
relaying network
amplify-and-forward
relay selection
