计算机工程2017，Vol.43Issue(2)：163-170,8.DOI:10.3969/j.issn.1000-3428.2017.02.027
解码转发中继传输系统能量效率的分析与优化
Energy Efficiency Analysis and Optimization for Decode-and-Forward Relay Transmission System
摘要
Abstract
This paper studies the Energy Efficiency(EE) of Decode-and-Forward One-Way Relay Transmission (DFOWRT) and Decode-and-Forward Two-Way Relay Transmission (DF-TWRT) systems under strict delay constraint.It maximizes the EE by jointly optimizing the transmission time and the transmit power.By expressing the transmit powers as the functions of the transmission time through the channel capacity and Signal-to Noise Ratio (SNR) expression,it turns the joint optimization problem to an optimization problem with two decision variables.It uses the theory of extreme values of multivariate functions and gradient descent algorithm to find the optimal transmission time which can minimize the energy consumption,and gives the algorithm of the energy consumption minimum.Simulation results show that DFTWRT mode is fit for the application situation of rate asymmetry,DF-OWRT is fit for the situation of the terminal with mobility.关键词
单向中继/双向中继/解码转发/能量效率/功率/信噪比Key words
one-way relay/two-way relay/Decode-and-Forward (DF)/Energy Efficiency (EE)/power/Signa-to-Noise Ratio (SNR)分类
信息技术与安全科学引用本文复制引用
杨洁,陈瑞,郭丽红,芮雄丽..解码转发中继传输系统能量效率的分析与优化[J].计算机工程,2017,43(2):163-170,8.基金项目
江苏省自然科学基金(BK20141389) （BK20141389）
南京工程学院博士基金(ZKJA201510,ZKJA201305,ZKJA201511). （ZKJA201510,ZKJA201305,ZKJA201511）
