UWB多中继协作系统传输策略设计

摘要

为超宽带（ultra wide-band，UWB）多中继协作系统设计提出了以最小化每符号全系统平均能耗为目标的高能效协作传输（energy-efficient cooperative transmission，ECT）和以最小化系统中断概率为目标的中断概率最优化传输（outage probability-optimal cooperative transmission，OCT）两个最优化不同系统性能的协作传输策略。仿真结果表明，ECT传输策略在能耗方面优于OCT策略，且ECT传输策略下的中断概率远远大于OCT传输策略。因此，系统的节能设计必须在能耗与其他系统性能之间进行折衷。%Aiming at optimizing corresponding system performance,two transmission schemes have been developed for ultra wide-band (UWB)multi-relay cooperative systems:(1 )energy-efficient cooperative transmission (ECT)scheme is for minimizing the average energy consumption of the system;(2 )outage probability-optimal cooperative transmission (OCT)scheme is for minimi-zing the outage probability of the system.Simulation results show that ECT scheme outperforms OCT scheme in terms of energy consumption.Meanwhile,OCT scheme present better outage performance than ECT scheme.Therefore,the tradeoff between energy consumption and other system performance should be considered and made while carrying on energy conversation design for cooperative systems.