Frequency Domain Channel Estimation for Cooperative Communication Networks

Author

Lalos, Aris S. ; Rontogiannis, Athanasios A. ; Berberidis, Kostas

Author_Institution

Dept. of Comput. Eng. & Inf., Univ. of Patras, Rio-Patras, Greece

Volume

58

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

3400

Lastpage

3405

Abstract

In this correspondence, we deal with the problem of channel estimation in amplify-and-forward (AF) wideband cooperative relay-based networks. Two types of frequency domain channel estimation techniques are proposed and analyzed. First, a training based technique is presented for which an optimal pilot placement and power allocation strategy is described. Second, hybrid techniques are introduced in which both training as well as channel output correlation information is utilized for channel estimation. A theoretical performance study of the proposed algorithms is presented and closed-form expressions for the mean squared channel estimation error are provided. The presented theoretical analysis is verified via extensive Monte Carlo simulations.

Keywords

MIMO communication; Monte Carlo methods; broadband networks; channel estimation; frequency estimation; frequency-domain analysis; mean square error methods; radio networks; MIMO channels; amplify-and-forward wideband cooperative relay-based networks; channel output correlation information; closed-form expressions; cooperative communication networks; extensive Monte Carlo simulations; frequency domain channel estimation techniques; mean squared channel estimation error; optimal pilot placement strategy; power allocation strategy; training based technique; Amplify-and-forward; channel estimation; cooperative networks; relays;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2010.2045413

Filename

5428843