Joint Relay Selection and Power Allocation for Two-Way Relaying with Physical Layer Network Coding

Author

Thinh Phu Do ; Jin Soo Wang ; Iickho Song ; Yun Hee Kim

Author_Institution

Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea

Volume

17

Issue

2

fYear

2013

fDate

Feb-13

Firstpage

301

Lastpage

304

Abstract

We consider a two-way relay (TWR) network with multiple relays, where the relays adopt physical layer network coding based on decode-and-forward. A joint relay selection and power allocation (RS-PA) scheme is proposed to improve the symbol error probability (SEP) of the TWR network using BPSK modulation under the total power constraint. For the proposed scheme and the benchmark scheme performing RS without PA, the average SEP of the TWR network is derived analytically and confirmed with simulation results. It is shown that the proposed scheme provides an asymptotic SNR gain of about 1.76 dB over the benchmark scheme at the same diversity order.

Keywords

decode and forward communication; phase shift keying; probability; relay networks (telecommunication); BPSK modulation; RS-PA scheme; SEP; TWR network; asymptotic SNR gain; benchmark scheme; decode-and-forward; joint relay selection; multiple relay; physical layer network coding; power allocation; symbol error probability; two-way relay network; Binary phase shift keying; Joints; Network coding; Relays; Resource management; Signal to noise ratio; Silicon; Physical layer network coding; power allocation; relay selection; symbol error probability; two-way relay;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.122013.122134

Filename

6400353