Beamforming and Combining in Two-Way AF MIMO Relay Networks

Author

Arti, M.K. ; Mallik, Ranjan K. ; Schober, Robert

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. - Delhi, New Delhi, India

Volume

17

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

1400

Lastpage

1403

Abstract

In this letter, we propose a beamforming and combining scheme for a two-way amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay network. An approximate expression for the symbol error rate of the scheme in Rayleigh fading for M-ary phase-shift keying is obtained based on the moment generating function of the instantaneous received signal-to-noise ratio. The diversity order is also analytically derived. It is shown by simulations that the proposed scheme outperforms existing schemes for beamforming and combining in two-way AF MIMO relay systems. We also discuss beamforming and combining in a two-way AF MIMO relay system with estimated channel gains.

Keywords

MIMO communication; Rayleigh channels; amplify and forward communication; approximation theory; array signal processing; channel estimation; diversity reception; phase shift keying; relay networks (telecommunication); M-ary phase-shift keying; Rayleigh fading; approximate expression; beamforming-and-combining scheme; channel gain estimation; diversity order; instantaneous received signal-to-noise ratio; moment generating function; symbol error rate; two-way AF MIMO relay networks; two-way amplify-and-forward multiple-input multiple-output relay network; Array signal processing; Diversity reception; MIMO; Nickel; Relays; Signal to noise ratio; Vectors; Amplify-and-forward (AF) protocol; channel estimation; cooperative diversity; multiple-input multiple-output (MIMO) system;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.052413.130731

Filename

6522950