NDLI: Enhancing the Efficiency of Constrained Dual-Hop Variable-Gain AF Relaying Under Nakagami-<formula formulatype=inline> <tex Notation=TeX>$m$</tex></formula> Fading

Content Provider	IEEE Xplore Digital Library
Author	Zafar, A. Radaydeh, R.M. Yunfei Chen Alouini, M.-S.
Copyright Year	1991
Abstract	This paper studies power allocation for performance constrained dual-hop variable-gain amplify-and-forward (AF) relay networks in Nakagami- m fading. In this context, the performance constraint is formulated as a constraint on the end-to-end signal-to-noise-ratio (SNR) and the overall power consumed is minimized while maintaining this constraint. This problem is considered under two different assumptions of the available channel state information (CSI) at the relays, namely full CSI at the relays and partial CSI at the relays. In addition to the power minimization problem, we also consider the end-to-end SNR maximization problem under a total power constraint for the partial CSI case. We provide closed-form solutions for all the problems which are easy to implement except in two cases, namely selective relaying with partial CSI for power minimization and SNR maximization, where we give the solution in the form of a one-variable equation which can be solved efficiently. Numerical results are then provided to characterize the performance of the proposed power allocation algorithms considering the effects of channel parameters and CSI availability.
Sponsorship	IEEE Signal Processing Society
Starting Page	3616
Ending Page	3630
Page Count	15
File Size	2951411
File Format	PDF
ISSN	1053587X
Volume Number	62
Issue Number	14
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Resource management Signal to noise ratio Rayleigh channels Signal processing algorithms Educational institutions variable-gain relays Amplify-and-forward cooperative relaying energy-efficiency Nakagami-$m$ fading power allocation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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