基于能量采集的全双工中继系统时隙优化

Time Slot Optimization in Energy Collection Full-duplex Relay System

针对能量采集基础上的全双工中继系统时隙优化问题,以双跳能量采集全双工中继系统为模型,基于中继工作于时间分割模式,分析了在放大中继转发协议与译码中继转发协议下如何实现系统吞吐量最大化,对能量采集时隙进行了优化研究,推导了瑞利衰落信道下最佳能量采集时间的具体表达式,在仿真中对比了全双工中继系统与半双工中继系统的吞吐量。通过性能分析与仿真实现可知,全双工中继技术可以提高频谱利用效率、系统吞吐量,满足日益增长的高速率要求。

Focused on time slot optimization based on energy collection technology,a two-hop energy collection full-duplex relay system model is investigated.Based on the total work in time division model,the problem of how to maximize the system throughput under AF and DF protocols is analyzed.The energy collection time slot optimization is studied,the specific expression of the best energy collection time in Rayleigh fading channel is deduced.Then,the throughputs of full-and half-duplex relay systems are compared in the simulation.Finally,through performance analysis and simulation,it is concluded that the full-duplex relay technology improves the spectrum efficiency and the throughput of system,which meets the increasingly high demand for data rate.