Manifold optimization algorithms for SWIPT over MIMO broadcast channels with discrete input signals
Manifold optimization algorithms for SWIPT over MIMO broadcast channels with discrete input signals
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DOI：
10.1109/icc.2017.7997006
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
An-an Lu;Xiqi Gao;Y. R. Zheng;Chengshan Xiao
中科院分区：
文献类型：
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作者：
An-an Lu;Xiqi Gao;Y. R. Zheng;Chengshan Xiao
本文研究了在多输入多输出（MIMO）广播信道上同时进行无线信息和功率传输（SWIPT）的线性预编码器的设计。所考虑的系统模型由一个基站（BS）、一个信息接收器（IR）和一个能量接收器（ER）组成。设计目标是最大化IR的输入输出互信息，以满足ER的能量需求。利用流形优化的方法推导了最优预编码器的结构，并提出了一种寻找最优预编码器的算法。仿真结果表明，该算法比分时方案和针对高斯输入设计的最优预编码器具有更好的性能。
In this paper, the design of linear precoders for simultaneously wireless information and power transfer (SWIPT) over multi-input multi-output (MIMO) broadcast channels with discrete input signals is investigated. The considered system model consists of one base station (BS), one information receiver (IR) and one energy receiver (ER). The design objective is to maximize the input-output mutual information of the IR subject to the harvested energy requirement for the ER. The structure of the optimal precoder is derived by using the methods of manifold optimization, and an algorithm is proposed to find the optimal precoder. Simulation results show that the proposed algorithm can achieve better performance than the time sharing scheme and the optimal precoder designed for Gaussian inputs.