NDLI: Performance analysis of optimal beamforming in AF MIMO relaying over asymmetric fading channels

Content Provider	IEEE Xplore Digital Library
Author	Jayasinghe, P. Jayasinghe, L.K.S. Juntti, M. Latva-aho, M.
Copyright Year	2013
Description	Author affiliation: Centre for Wireless Commun., Univ. of Oulu, Oulu, Finland (Jayasinghe, P.; Jayasinghe, L.K.S.; Juntti, M.; Latva-aho, M.)
Abstract	This paper considers an optimal single stream beamforming for a multiple-input multiple-output (MIMO) relay network with non-coherent dual-hop amplify-and-forward (AF) relaying. The source-relay and relay-destination channels undergo Rayleigh and Rician fading respectively. The channel state information is only available at the destination, and the destination computes the optimal transmit and receive beamforming vectors to maximize the instantaneous signal-to-noise ratio (SNR) at the destination. The optimal transmit beamforming vector will be sent back to the transmitter via a dedicated feedback link. We derive closed-form expressions for the cumulative density function, probability density function, and moments to statistically characterize the properties of the instantaneous SNR. These statistical properties are used to analyze the performance of the system with outage probability, average bit error rate, and ergodic capacity. The results of the performance analysis reveal that Rician factor and number of antennas at the nodes improve the system performance, and the optimal single stream beamforming system provides better error performance than an orthogonal space-time block coded based AF MIMO system.
Starting Page	708
Ending Page	712
File Size	159132
Page Count	5
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666228
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Relays Array signal processing Rician channels Antennas Bit error rate
Content Type	Text
Resource Type	Article

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