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

被引：2

作者：

Heliot, Fabien ^{[1
]}

Hoshyar, Reza ^{[1
]}

Tafazolli, Rahim ^{[1
]}

机构：

[1] Univ Surrey, Ctr Commun Syst Res, Guildford GU2 7HX, Surrey, England

来源：

2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2010年

关键词：

CLOSED-FORM APPROXIMATION; NORMAL FADING CHANNEL; WIRELESS NETWORKS; DIVERSITY; TRANSMISSION; PROTOCOLS; CAPACITY;

D O I：

10.1109/PIMRC.2010.5672080

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 three novel power allocation methods for the downlink of cooperative multi-user MIMO AF system, which are designed to maximize the weighted sum-rate (WSR) of the cooperative system, by considering two different levels of channel state information (CSI). We design efficient precoding algorithms at the relay by assuming that either only the receive CSI or both receive and transmit CSI is available at the relay. Results show the performance improvement that our schemes can achieve in terms of sum-rate and WSR metrics.

引用

页码：905 / 910

页数：6

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