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Low-Complexity Power Allocation Schemes for the Downlink of Nonregenerative Cooperative Multi-User MIMO Communication System

Héliot, F, Hoshyar, R and Tafazolli, R (2010) Low-Complexity Power Allocation Schemes for the Downlink of Nonregenerative Cooperative Multi-User MIMO Communication System In: ICT Future Network & Mobile Summit, 2010-06-16 - 2010-06-18, Florence, Italy.

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Abstract

Amplify-and-forward (AF) is one of the most popular and simple approaches to transmit information over a cooperative multi-input multi-output (MIMO) relay channel. In this paper, we propose two novel power allocation methods for the downlink of multi-user multi-input multi-output AF cooperative system, which are designed to optimise the sum-rate of the cooperative system according to the weighted sum-rate criterion. The main optimisation problem is not concave and our two methods aim at simplifying it in order to turn it into a concave problem, which can then be easily solved.

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Depositing User: Fabien Heliot
Date Deposited: 26 Nov 2010 15:57
Last Modified: 23 Sep 2013 18:40
URI: http://epubs.surrey.ac.uk/id/eprint/2662

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