Reference : Collaborative-Relay Beamforming with Perfect CSI: Optimum and Distributed Implementation
Scientific journals : Article
Engineering, computing & technology : Computer science
Engineering, computing & technology : Computer science
http://hdl.handle.net/10993/7527
Collaborative-Relay Beamforming with Perfect CSI: Optimum and Distributed Implementation
English
Zheng, Gan mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Wong, Kai-Kit [> >]
Paulraj, Arogyaswami [> >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Apr-2009
IEEE Signal Processing Letters
IEEE
16
4
257–260
Yes (verified by ORBilu)
International
1070-9908
[en] This letter studies the collaborative use of amplify-and-forward (AF) relays to form a virtual multiple-input single-output (MISO) beamforming system with the aid of perfect channel state information (CSI) in a flat-fading channel. In particular, we optimize the relay weights jointly to maximize the received signal-to-noise ratio (SNR) at the destination terminal with both individual and total power constraints at the relays. We show that the optimal collaborative-relay beamforming (CRB) solution achieves the full diversity of a MISO antenna system. Another main contribution of this letter is a distributed algorithm that allows each individual relay to learn its own weight, based on the Karush-Kuhn-Tucker (KKT) analysis.
Others
http://hdl.handle.net/10993/7527
10.1109/LSP.2008.2010810

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