电子器件Issue(2)：392-395,4.DOI:10.3969/j.issn.1005-9490.2015.02.033
单用户对双向中继系统中基于梯度下降的最大化和速率功率分配方案∗
A Gradient-Descent-Based Power Allocation of Maximizing Sum-Rate for Single-Pair Two-Way MIMO Relay System
摘要
Abstract
In single-pair two-way relay system,a new power allocation(PA)of maximizing sum-rate based on gradient descent method is proposed. Under the constraint of transmit power sum,with the aim of maximizing the sum-rate,we obtain the locally-optimal weighted matrix of relay station and PA policy by alternative iteration between the weighted matrix of relay station and PA policy. The simulations show that,compared to equal PA(EPA),the proposed PA achieves a 2.5 dB~3 dB signal-to-noise-ratio( SNR) gain at the bit-error-ratio 10-2;additionally,in the region of medi-um and high SNRs,the proposed PA indicates a sum-rate gain of 0.3 (bit/s)/Hz~0.5 (bit/s)/Hz over EPA.关键词
多输入多输出/双向中继/功率分配/梯度下降法Key words
MIMO/two-way relay/power allocation/gradient descent method分类
信息技术与安全科学引用本文复制引用
戴雨峰,束锋,陈宇,童娟娟,李隽,陆锦辉..单用户对双向中继系统中基于梯度下降的最大化和速率功率分配方案∗[J].电子器件,2015,(2):392-395,4.基金项目
中央高校基本科研业务费专项资金项目(30920130122004) （30920130122004）
国家自然基金项目(61271230) （61271230）
东南大学移动通信国家重点实验室开放课题项目(2013D02) （2013D02）
