Relay Selections for Cooperative Underlay CR Systems with Energy Harvesting
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Statistics Program
Date
2019-04-02Online Publication Date
2019-04-02Print Publication Date
2019-06Permanent link to this record
http://hdl.handle.net/10754/631829
Metadata
Show full item recordAbstract
In this work, we consider a cooperative underlay cognitive radio system in which one secondary user (S) transmits its data to a secondary receiver with the assistance of multiple relays. In the considered underlay spectrum sharing scenario, the transmit power levers at S and forwarding relays are adjusted simultaneously according to a given threshold interference power that the primary user can tolerate. We also consider that relays adopt threshold decode-and-forward relay scheme and harvest energy from the primary transmitter with finite energy storage capacity under time switching scheme. Three best relay selection schemes, optimal source-relay link with wireless energy harvesting (WEH), optimal relay-destination link with WEH and optimal source-relay-destination link with WEH schemes, are proposed and studied. Closed-form analytical expressions for the outage probability of these three best relay selection schemes are derived, respectively. Finally, our analytical results are verified by Monte-Carlo simulations.Citation
Ye J, Liu Z, Zhao H, Pan G, Ni Q, et al. (2019) Relay Selections for Cooperative Underlay CR Systems with Energy Harvesting. IEEE Transactions on Cognitive Communications and Networking: 1–1. Available: http://dx.doi.org/10.1109/TCCN.2019.2908900.Sponsors
This work was supported in part by the Royal Society project under Grant IEC170324.Additional Links
https://ieeexplore.ieee.org/document/8680686ae974a485f413a2113503eed53cd6c53
10.1109/TCCN.2019.2908900