协作通信中自适应中继选择和功率控制算法

Abstract

本文基于传统协作通信中的对于固定转发协议研究的基础上，针对了动态网络环境中网络拓扑的变化与无线传输的时序特性，提出了自适应中继选择算法和功率分配方案。仿真结果表明，相对于传统固定协作分集而言，本文提出算法进一步提高了性能增益，误比特率显著下降，延长网络寿命。 Based on the traditional cooperative communications’ protocol for fixed forwarding based on the research, according to a dynamic network environment for network topology changes dynamically and wireless transmission timing characteristics, an adaptive transmission relay selection strategy and power allocation method was proposed. Simulation results showed that, compared with traditional fixed cooperative diversity, the proposed adaptive relaying scheme further improved the performance gain, bit error rate dropped significantly, and that the network life was prolonged.