Title :
Decentralized Collaborative Uplink Beamforming with Robustness Against Channel Mismatches
Author :
El-Keyi, Amr ; Champagne, Benolt
Author_Institution :
McGill Univ., Montreal
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;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487638
