Pilot-based ML estimation in Amplify-and-Forward cooperative networks

Author

Aerts, Nico ; Moeneclaey, Marc

Author_Institution

Dept. of Telecommun. & Inf. Process., Ghent Univ., Ghent, Belgium

fYear

2012

fDate

1-4 April 2012

Firstpage

1044

Lastpage

1048

Abstract

Cooperative communication is a promising technique that achieves spatial diversity without requiring multi-antenna receivers. In this paper we consider the cooperative Amplify-and-Forward protocol and assume the channel realizations to be unknown. We study several pilot-based channel estimation strategies at the relay and the destination. The obtained maximum-likelihood estimators are evaluated for transmission over Rice-fading channels, in terms of channel estimation accuracy and error performance.

Keywords

amplify and forward communication; channel estimation; cooperative communication; diversity reception; fading channels; maximum likelihood estimation; protocols; amplify-and-forward cooperative networks; error performance; maximum-likelihood estimators; pilot-based channel estimation strategies; spatial diversity; transmission over Rice-fading channels; Channel estimation; Maximum likelihood estimation; Relays; Signal to noise ratio; Strontium; Vectors; Amplify-and-Forward; Cooperative communication; Estimation; Maximum-Likelihood;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2012 IEEE

Conference_Location

Shanghai

ISSN

1525-3511

Print_ISBN

978-1-4673-0436-8

Type

conf

DOI

10.1109/WCNC.2012.6213928

Filename

6213928