最小化具有无线携能通信的全双工中继系统发射功率和

doi:10.11772/j.issn.1001-9081.2019081477

《计算机应用》唯一官方网站 ›› 2020, Vol. 40 ›› Issue (2): 363-368.DOI: 10.11772/j.issn.1001-9081.2019081477

• 2019年全国开放式分布与并行计算学术年会(DPCS 2019)论文 • 上一篇下一篇

最小化具有无线携能通信的全双工中继系统发射功率和

周叶宁, 李陶深(), 曾敏, 肖楠

广西大学计算机与电子信息学院，南宁 530004

收稿日期:2019-07-31 修回日期:2019-09-08 接受日期:2019-09-23 发布日期:2019-10-14 出版日期:2020-02-10
通讯作者: 李陶深
作者简介:周叶宁（1994—），女，湖南衡阳人，硕士研究生，CCF会员，主要研究方向：无线携能传输、无线能量捕获
曾敏（1996—），女，湖南娄底人，硕士研究生，主要研究方向：群智能算法优化、数据挖掘、智能优化
肖楠（1992—），男，河北秦皇岛人，硕士研究生，CCF会员，主要研究方向：无线携能传输、无线能量捕获。
基金资助:
国家自然科学基金资助项目(61762010)

Minimizing transmit power sum of full-duplex relay system with simultaneous wireless information and power transmission

Yening ZHOU, Taoshen LI(), Min ZENG, Nan XIAO

School of Computer，Electronics and Information，Guangxi University，Nanning Guangxi 530004，China

Received:2019-07-31 Revised:2019-09-08 Accepted:2019-09-23 Online:2019-10-14 Published:2020-02-10
Contact: Taoshen LI
About author:ZHOU Yening， born in 1994， M. S. candidate. Her research interests include simultaneous wireless information and power transmission， wireless energy harvest.
ZENG Min， born in 1996， M. S. candidate. Her research interests include group intelligent algorithm optimization， data mining， intelligent optimization.
XIAO Nan， born in 1992， M. S. candidate. His research interests include simultaneous wireless information and power transmission， wireless energy harvest.
Supported by:
the National Natural Science Foundation of China(61762010)

摘要/Abstract

摘要：

考虑在无线网络中采用信息与能量同步传输来提高无线中继系统的性能，提出了基于无线射频网络中采用无线携能通信（SWIPT）技术的具有自能量回收的双向传输全双工中继系统。SWIPT应用在双向全双工中继系统中是一个新的尝试，其中能量受限的目的节点使用从中继和环路信道捕获的能量来发送反馈信息，并给出了全双工中继系统工作的逻辑结构和能量受限的目的节点的物理结构。然后，以最小化系统发射功率和作为优化目标来描述系统的性能，采用功率分配方案进行信息解码和能量捕获，应用半定规划、秩松弛和拉格朗日方法将原始非凸优化方程转化为可解凸优化问题并求解，且联合优化了中继发射功率、发射波束成形向量和功率分配比率。最后，实验仿真对比了所提的新系统与传统双向传输中继系统，结果验证了利用自能量回收不仅可以消除自干扰，而且可以显著优化系统发射功率和，且由于SWIPT技术与全双工中继系统的结合，使得所提出的系统比传统的双向传输系统具有更高的性能增益。

关键词: 无线携能通信, 双向传输, 全双工, 中继系统, 发射功率和, 自能量回收, 半定规划, 秩松弛

Abstract:

Considering the adoption of information and energy simultaneous transmission in wireless networks to improve the performance of wireless relay systems， a bidirectional transmission full-duplex relay system with self-energy recycling based on wireless radio frequency network was proposed by using Simultaneous Wireless Information and Power Transmission （SWIPT） technology. It is a new attempt to apply SWIPT in bidirectional full-duplex relay system. The energy-constrained destination node used the energy harvested from the relay and the loop channel to send feedback information， and the logical structure of the full-duplex relay system and the physical structure of the energy-constrained destination node were given. Then， the system performance was described by using the minimization of the system transmit power sum as the optimization target， the power allocation scheme was used for information decoding and energy harvest， the semi-definite programming， rank relaxation and Lagrange methods were used to transform the original non-convex optimization equation into a solvable convex optimization problem， and the solution of the problem was found. The relay transmission power， transmit beamforming vector and power allocation ratio were jointly optimized. Finally， the proposed system was compared with the traditional bidirectional transmission relay system by experimental simulator. The results verify that the self-energy recycling can not only eliminate self-interference， but also significantly optimize the system transmission power sum， and reveal that the proposed system has higher performance gain than the traditional bidirectional transmission system due to the combination of SWIPT technology and full-duplex relay system.

Key words: Simultaneous Wireless Information and Power Transmission (SWIPT), bidirectional transmission, full-duplex, relay system, transmit power sum, self-energy recycling, semi-definite programming, rank relaxation

中图分类号:

TP393

周叶宁, 李陶深, 曾敏, 肖楠. 最小化具有无线携能通信的全双工中继系统发射功率和[J]. 计算机应用, 2020, 40(2): 363-368.

Yening ZHOU, Taoshen LI, Min ZENG, Nan XIAO. Minimizing transmit power sum of full-duplex relay system with simultaneous wireless information and power transmission[J]. Journal of Computer Applications, 2020, 40(2): 363-368.

图/表 9

图1 具有SWIPT的全双工中继系统

Fig.1 Full-duplex relay system with SWIPT

图2 全双工中继的逻辑结构

Fig.2 Logical structure of full-duplex relay system

图3 具有自能量回收的目的节点的结构

Fig.3 Structure of destination node with self-energy recycling

图4 传统全双工中继传输协议

Fig.4 Traditional full-duplex relay transmission protocol

图5 在不同ε下的发射功率和与Ps的关系

Fig.5 Relationship between transmit power sum and Ps under different ε

图6 在不同ε下的发射功率和与ρ的关系

Fig.6 Relationship between transmit power sum and ρ with different ε

图7 在不同ε下随运行次数变化的目的节点的发射功率

Fig.7 Transmit power of destination node varying with the number of runs under different ε

图8 不同SNR时ε对本文系统与传统系统的发射功率和的影响

Fig.8 Impact of ε on transmit power sum of proposed and traditional system under different SNR

图9 发射天线数量N对系统发射功率和的影响

Fig. 9 Impact of the number of transmit antennas N on system transmit transmission sum

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最小化具有无线携能通信的全双工中继系统发射功率和

Minimizing transmit power sum of full-duplex relay system with simultaneous wireless information and power transmission

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