Beamforming optimization for full-duplex cooperative cognitive radio networks

Hu, Shiyang and Ding, Zhiguo and Ni, Qiang and Yuan, Yi (2016) Beamforming optimization for full-duplex cooperative cognitive radio networks. In: Signal Processing Advances in Wireless Communications (SPAWC), 2016 IEEE 17th International Workshop on :. IEEE. ISBN 9781509017508

[thumbnail of 1570250808]
Preview
PDF (1570250808)
1570250808.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (236kB)

Abstract

This paper considers the problem of beamforming optimization in a cognitive cooperative energy harvesting network, in which the secondary transmitter (ST) harvests energy from the primary transmitter (PT) and relays the information for the primary user (PU) with amplify-and-forward (AF) relay protocol. When the channel of the primary system is affected with deep fading or shadowing effects, the ST can assist the primary information transmission. It is particularly useful to employ the energy harvesting protocol to avoid that the ST does not have enough energy to assist the PU. Based on the self-energy recycling relay protocol, we study the beamforming optimization problem. We develop a semidefinite programming (SDP) relaxation method to solve the proposed problem. We also use SDP and one-dimension (1-D) optimization to solve the beamforming optimization based on a time-switching relaying protocol (TSR) as a benchmark. The simulation results are presented to verify that the self-energy recycling protocol achieves a significant rate gain compared to the TSR protocol and the power-splitting relaying (PSR) protocol.

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
©2016 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Subjects:
?? beamforming optimizationcooperative cognitive radio networksenergy harvesting ??
ID Code:
85868
Deposited By:
Deposited On:
22 May 2017 12:06
Refereed?:
Yes
Published?:
Published
Last Modified:
10 Jan 2024 00:43