NDLI: Cooperative beamforming for multi-user multi-relay networks based on second-order statistics of channel state information

Content Provider	IEEE Xplore Digital Library
Author	Meghdadi, H. Cances, J.-P. Meghdadi, V.
Copyright Year	2012
Description	Author affiliation: University of Limoges, ENSIL, Limoges, France (Meghdadi, H.; Cances, J.-P.; Meghdadi, V.)
Abstract	This paper investigates linear beamforming techniques in relay networks with one source and multiple relays and destinations. The goal is to determine the beamforming matrix so that the signal to noise plus interference ratio at the destination is maximized while respecting power constraints. The considered power constraint here is a total (source and relays) maximum constant power. The key point of this paper is that we propose to use only the second order statistics of channel state information which is a more realistic scenario than the case where instantaneous channel coefficients are assumed to be perfectly known by the relays. We show that, despite some losses compared to the case of zero forcing using perfect channel information, second order statistics based beamforming algorithms are good candidates to reliably support multiple parallel data streams with signal to noise plus interference requirements in multiuser multi-relay systems.
Starting Page	361
Ending Page	364
File Size	169271
Page Count	4
File Format	PDF
ISBN	9781457700576
e-ISBN	9781457700583
DOI	10.1109/ICComm.2012.6262575
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-21
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Cooperative beamforming Interference SINR maximization Mobile communication Relays Channel state information Signal to noise ratio
Content Type	Text
Resource Type	Article

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