Decentralized Collaborative Uplink Beamforming with Robustness Against Channel Mismatches

Author

El-Keyi, Amr ; Champagne, Benolt

Author_Institution

McGill Univ., Montreal

fYear

2007

fDate

4-7 Nov. 2007

Firstpage

2235

Lastpage

2238

Abstract

We present a distributed algorithm for collaborative uplink transmit beamforming that provides robustness against uncertainties in the channel state information. Our algorithm is derived using the available information about the second-order statistics of the channel and the possibly erroneous channel state. It can be applied to both line-of-sight propagation and flat fading channels. The beamforming coefficients of each terminal are computed locally using the available information about its channel and a single parameter that is broadcasted from the base station to all the cooperating terminals.

Keywords

array signal processing; channel estimation; fading channels; radiowave propagation; statistical analysis; channel estimation; channel mismatches; channel state information; decentralized collaborative uplink beamforming; distributed algorithm; flat fading channels; line-of-sight propagation channels; second-order statistics; Array signal processing; Channel state information; Collaboration; Computer vision; Distributed algorithms; Fading; Line-of-sight propagation; Robustness; Statistical distributions; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

978-1-4244-2109-1

Electronic_ISBN

1058-6393

Type

conf

DOI

10.1109/ACSSC.2007.4487638

Filename

4487638