Outage Performance of Cognitive Relay Networks With Wireless Information and Power Transfer

被引：93

作者：

Yang, Zheng ^{[1
]}

Ding, Zhiguo ^{[2
]}

Fan, Pingzhi ^{[1
]}

Karagiannidis, George K. ^{[3
,4
]}

机构：

[1] Southwest Jiaotong Univ, Inst Mobile Commun, Chengdu 610031, Peoples R China

[2] Univ Lancaster, Sch Comp & Commun, Lancaster LA1 4YW, England

[3] Aristotle Univ Thessaloniki, Dept Elect & Comp Engn, Thessaloniki 54124, Greece

[4] Khalifa Univ, Dept Elect & Comp Engn, Abu Dhabi 127788, U Arab Emirates

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2016年 / 65卷 / 05期

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

Cognitive radio (CR) systems; decode-and-forward (DF); energy harvesting; simultaneous wireless information and power transfer (SWIPT); ENERGY; RADIO;

D O I：

10.1109/TVT.2015.2443875

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we consider underlay cognitive radio (CR) networks with one primary receiver, one cognitive transmitter-receiver pair, and one energy harvesting relay. The transmission power of the secondary source is opportunistically determined by its interference to the primary receiver, and the relay transmission is powered by the energy harvested from the radio-frequency observations at the relay. For the considered CR networks with simultaneous wireless information and power transfer (SWIPT), we derive analytical expressions for the outage probability, as well as their high signal-to-noise ratio (SNR) approximations in closed form. The developed analytical results demonstrate that the use of SWIPT will not cause any loss in diversity gain, but the outage probability achieved by the SWIPT-CR scheme asymptotically decays as log SNR/SNR, whereas a decaying rate of 1/SNR is achieved by a conventional CR network. Computer simulation results are also provided to demonstrate the accuracy of the presented analysis.

引用

页码：3828 / 3833

页数：7

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