基于WIPT的两路中继协作underlay认知无线电的性能分析

doi:10.11959/j.issn.1000-436x.2019041

通信学报 ›› 2019, Vol. 40 ›› Issue (2): 129-136.doi: 10.11959/j.issn.1000-436x.2019041

基于WIPT的两路中继协作underlay认知无线电的性能分析

徐纪胜¹,曾凡仔¹,李康¹,李勇峰²

¹ 湖南大学信息科学与工程学院，湖南长沙 810012
² 西藏大学工学院，西藏拉萨 850000

修回日期:2018-03-18 出版日期:2019-02-01 发布日期:2019-03-04
作者简介:徐纪胜（1987- ），男，湖南常德人，湖南大学博士生，主要研究方向为无线通信、5G、认知无线电网络、绿色通信、博弈论。|曾凡仔（1971- ），男，湖南嘉禾人，博士，湖南大学教授、博士生导师，主要研究方向为无线通信、5G、认知无线电网络、绿色通信、博弈论。|李康（1993- ），女，湖南浏阳人，湖南大学硕士生，主要研究方向为无线通信、认知无线电网络、5G、绿色通信、博弈论。|李勇峰（1980- ），男，陕西洛南人，西藏大学副教授，主要研究方向为无线传感器网络、电路与系统设计和新能源利用。
基金资助:
国家自然科学基金资助项目(61370096);国家自然科学基金资助项目(61772184);西藏自治区自然科学基金资助项目(2016ZR-TU-02);西藏大学青年科研培育基金资助项目(ZDPJZK1606);西藏大学珠峰学者人才支持计划——杰出青年基金资助项目([2016]141)

Performance analysis of two-way relay cooperation underlay cognitive radio networks based on WIPT

Jisheng XU¹,Fanzi ZENG¹,Kang LI¹,Yongfeng LI²

¹ College of Information Science and Engineering,Hunan University,Changsha 810012,China
² School of Engineering,Tibet University,Lhasa 850000,China

Revised:2018-03-18 Online:2019-02-01 Published:2019-03-04
Supported by:
The National Natural Science Foundation of China(61370096);The National Natural Science Foundation of China(61772184);The Natural Science Foundation of Tibet Autonomous Region(2016ZR-TU-02);The Youth Research cultivation Foundation of Tibet University(ZDPJZK1606);The Program for Everest Scholar Talents Development of Tibet University([2016]141)

摘要/Abstract

摘要：

首先提出基于WIPT的两路中继协作underlay认知无线电网络，其中次用户系统采用两路协作中继传输，中继采取功率分裂协议进行能量采集和信息解码，利用所采集的能量转发信息。然后通过数学推导得出系统用户的中断概率精确表达式和次用户系统遍历容量以及能量效应。最后数值仿真探讨了次用户发射功率对系统性能的影响，结果表明两路中继协作有效地降低了数据传输的中断概率，且当功率分配系数取0.5时，系统的容量和能量效应达到最优。

关键词: 认知无线电网络, 两路中继, 协作通信, 无线信息和功率转发, 中断概率

Abstract:

The two-way relay cooperation for underlay cognitive radio networks based on WIPT was presented,where secondary system adopted the two-way relay cooperative transmission.First,the relay adopted a power splitting protocol to harvest energy and to decode information transmitted by secondary users,then the relay forwarded information to two secondary users by using the harvested energy.Subsequently the exact expression of the outage probability,the ergodic capacity and energy efficiency of the secondary user system were derived.Finally,numerical simulation discusses the impact on the system performance with regard to secondary transmission power.The results reveal that the two-way relay cooperation effectively reduces the outage probability of data transmission.The capacity and energy efficiency of the system reaches optimal level when the power allocation coefficient is 0.5.

Key words: cognitive radio networks, two-way relay, cooperation communication, wireless information and power transfer, outage probability

中图分类号:

TN925

徐纪胜,曾凡仔,李康,李勇峰. 基于WIPT的两路中继协作underlay认知无线电的性能分析[J]. 通信学报, 2019, 40(2): 129-136.

Jisheng XU,Fanzi ZENG,Kang LI,Yongfeng LI. Performance analysis of two-way relay cooperation underlay cognitive radio networks based on WIPT[J]. Journal on Communications, 2019, 40(2): 129-136.

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参考文献 16

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参数	值
发射功率/dB	50
最大干扰/dB	25
噪声方差	1
目标速率/(bit·(s·Hz) ^-1)	2
能量转换率	0.75
能量采集比	0.35
信道增益	0.8
节点间距离/m	0.25

基于WIPT的两路中继协作underlay认知无线电的性能分析

Performance analysis of two-way relay cooperation underlay cognitive radio networks based on WIPT

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