Optimal Combining and Performance Analysis for Two-Way EH Relay Systems With TDBC Protocol
Optimal Combining and Performance Analysis for Two-Way EH Relay Systems With TDBC Protocol
复制标题
TDBC协议双向EH中继系统的优化组合和性能分析
DOI：
10.1109/lwc.2018.2886895
复制
发表时间：
2019
影响因子：
6.3
通讯作者：
Zhang Hailin
中科院分区：
文献类型：
--
作者：
Shi Liqin;Ye Yinghui;Chu Xiaoli;Zhang Yangyang;Zhang Hailin
在这封信中，我们研究了一种基于同时无线信息和功率传输(SWIPT)的双向解码转发网络，其中SWIPT采用时间交换，双向中继采用时分广播。我们重点设计了一种合并方案，该方案决定了中继器如何通过中继器的功率分配比来合并从两个终端接收到的信号。我们建立了一个最小化系统中断概率的优化问题，得到了闭合形式的最优功率分配比。对于所提出的最优合并方案，我们推导了系统中断概率的表达式。仿真结果表明，与现有方案相比，所提出的方案具有更低的系统中断概率。
In this letter, we investigate a simultaneous wireless information and power transfer (SWIPT) based two-way decode-and-forward relay network, where time switching is employed for SWIPT and time division broadcast is employed for two-way relaying. We focus on the design of a combining scheme that decides how the relay combines the signals received from two terminals through a power allocation ratio at the relay. We formulate an optimization problem to minimize the system outage probability and obtain the optimal power allocation ratio in closed form. For the proposed optimal combining scheme, we derive the expression for the system outage probability. Simulation results verify our derived expressions and show that the proposed scheme achieves a lower system outage probability than the existing schemes.