摘要
MIMO技术可在不增加系统带宽和发射功率的前提下,成倍地提升无线通信系统吞吐量和服务质量。旨在研究能量收集与MIMO两种技术同时实现在协作通信系统中时,如何更大限度提高能量收集中继通信系统的吞吐量。首先针对多天线中继节点对信号的处理方式将工作模式分为时间切换模式和能量分割模式,其次分析了两种模式的最优策略,最后对两种策略的系统吞吐量进行了比较。仿真结果显示了在相同外部环境下,能量分割模式能获得更大的系统吞吐量。
MIMO technology can exponentially enhance the throughput and QoS of the wireless communica- tion system without any increase of bandwidth and transmission power. This article discusses how to im- prove the throughput of energy harvesting relay communication system when energy harvesting and MIMO technologies are simultaneously implemented in system. Firstly the operation mode is divided into time switching mode and power splitting mode in accordance with the method for handling signal. Then the opti- mal strategies of the two modes are analyzed separately. Finally, the throughputs of energy harvesting relay communication system in two operation modes are compared. Simulation results indicate that the power splitting mode could achieve greater throughput in the same external environment.
出处
《通信技术》
2016年第5期576-581,共6页
Communications Technology
基金
国家自然科学基金青年项目(No.61501510)~~
关键词
能量收集
中继通信
MIMO
时间切换
能量分割
energy harvesting
relay communication
MIMO
time switching
power splitting
