Outage probability analysis of energy harvesting cognitive cooperative relay networks with direct link

被引：0

作者：

Luo Y. ^{[1
,2
]}

Shi R. ^{[1
]}

Dong J. ^{[1
]}

Tang K. ^{[1
]}

Wang Y. ^{[2
]}

机构：

[1] School of Information Science and Engineering, Central South University, Changsha

[2] College of Information Science and Engineering, Hunan Normal University, Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Cognitive cooperative relay networks; Direct link; Energy harvesting; Hardware impairments; Outage probability;

D O I：

10.11817/j.issn.1672-7207.2019.08.013

中图分类号：

学科分类号：

摘要：

Aiming at the problem of short lifetime and high outage probability of energy-constrained cognitive relay networks, a cognitive cooperative relay networks with multiple primary receivers, multiple secondary destination nodes, direct link and power-beacon(PB) assisted energy harvesting was proposed. The exact and asymptotic outage probabilities of secondary networks for Rayleigh block fading channel were derived by adopting the opportunistic relay selection strategy and selection combining scheme. All the analytical results were validated by Monte Carlo simulation. The results show that with the increase of the primary receivers' interference constraint or PB's transmission power, the outage probability monotonically decreases until saturation is reached. The outage probability increases with the increase of secondary nodes' hardware impairments level, the number of primary receivers and end-to-end channel capacity of secondary networks. The outage probability reduces with the increase in the number of relays and secondary destination nodes. Appropriate setting of energy harvesting ratio can effectively reduce the outage probability. © 2019, Central South University Press. All right reserved.

引用

页码：1857 / 1865

页数：8

共 20 条

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