BER Analysis of Three-Phase XOR-and-Forward Relaying Using Alamouti STBC

Author

Legnain, Rajab M. ; Hafez, Roshdy H M ; Marsland, Ian D.

Author_Institution

Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, ON, Canada

Volume

16

Issue

9

fYear

2012

fDate

9/1/2012 12:00:00 AM

Firstpage

1458

Lastpage

1461

Abstract

In this paper we investigate the performance of two-way relaying that uses Alamouti space-time block code (STBC) and network coding. In this scheme, two nodes use Alamouti STBC to transmit their symbols to the relay consecutively in two phases. The relay detects and demodulates the transmitted symbols from the nodes, and then uses the bitwise-XOR operation to combine the detected bits. Then the relay modulates and broadcasts the XORed bits to the nodes using Alamouti STBC. In this paper, the bit error rate of the proposed scheme is derived for an uncorrelated Rayleigh fading channel with perfect channel estimation at receivers.

Keywords

Rayleigh channels; channel estimation; error statistics; network coding; radio receivers; space-time block codes; Alamouti STBC; Alamouti space-time block code; BER analysis; bitwise-XOR operation; network coding; perfect channel estimation; receiver; three-phase XOR-and-forward relaying; transmitted symbol demodulation; transmitted symbol detection; two-way relaying; uncorrelated Rayleigh fading channel; Bit error rate; Receiving antennas; Relays; Signal to noise ratio; Simulation; Transmitting antennas; Vectors; STBC; Two-way relaying; network coding;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.072012.120989

Filename

6249702