水声协作通信中的多分支变抽头长度多用户检测器

摘要

针对水声协作通信中水声信道特点带给链路可靠性的影响,提出一种多分支变抽头长度多用户检测(Multi-Branch Variable Tap-length Multi-User Detection,MBVT-MUD)方法,中继节点工作于放大转发模式(Amplify-and-Forward,AF).该方法联合实现了自适应合并和抽头长度的自适应调整.仿真结果表明,MBVT-MUD能够根据各个分支的信道环境自适应调整抽头长度到最优,且相对于现有的方法,能获得更好的误码率(Bit Error Rate,BER)性能.%In view of the influence of the channel characteristics of underwater acoustic cooperative communication to link reliability,this paper proposes a multi-branch variable tap-length multi-user detection (MBVT-MUD) method,the relay node operates in amplify-and-forward (AF) mode.This method combines the adaptive adjustment of adaptive merging and tap length.The simulation results show that the MBVT-MUD can adjust the tap length to the optimal frequency according to the channel environment of each branch,and obtain better bit error rate (BER) performance than the existing method.