Optimal Energy-Efficient Relay Selection and Power Allocation for Cognitive Two-Way Relay Network Using Physical-Layer Network Coding

被引：0

作者：

Liu, Jia ^{[1
]}

Kang, GuiXia ^{[1
]}

Zhu, Ying ^{[1
]}

Zhao, YingJiao ^{[1
]}

Mao, JunLing ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Key Lab Univ Wireless Commun, Minist Educ, Beijing 100876, Peoples R China

来源：

2013 IEEE 78TH VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL) | 2013年

关键词：

Physical-layer network coding; energy-efficient; power allocation; cognitive radio;

D O I：

暂无

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：

This paper addresses relay selection(RS) and power allocation(PA) issues for a physical-layer network coding (PNC) relay based secondary user (SU) communication in cognitive radio networks, in which two secondary transceiver nodes exchange their information with the assistance of a relay under interference power threshold (IPT) constraints. We propose an optimal energy-efficient RS and PA (OE-RS-PA) scheme to minimize total energy consumption per bit with the sum rate constraint and IPT constraints. A closed-form solution for optimal allocation of transmit power among the SU nodes and relay node are then derived analytically and confirmed by numerical results. Furthermore, numerical simulations and comparisons are presented to illustrate the performance of the proposed scheme.

引用

页数：5

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