Linear Relaying Scheme for MIMO Relay System With QoS Requirements

Author

Guan, Wei ; Luo, Hanwen ; Chen, Wen

Author_Institution

Dept. of Electron. Eng., Shanghai Jiaotong Univ., Shanghai

Volume

15

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

697

Lastpage

700

Abstract

In this letter, we address the problem of fulfilling quality-of-service (QoS) requirements in a multiple-input multiple-output (MIMO) relay system, where a set of target signal-to-noise ratios (SNRs) should be attained on different substreams. By solving a two-step optimization problem, we obtain a power-efficient relaying scheme that can make the SNR requirements asymptotically fulfilled. A simple relay selection method is also proposed such that the relay-power consumption can be largely reduced when there is a large number of relays.

Keywords

MIMO communication; quality of service; radio networks; MIMO relay system; QoS requirements; linear relaying scheme; multiple-input multiple-output relay system; quality-of-service requirements; relay-power consumption; signal-to-noise ratios; two-step optimization problem; Channel capacity; Digital relays; Energy consumption; Gaussian noise; MIMO; Power system relaying; Quality of service; Signal processing; Signal to noise ratio; Vectors; Multiple-input multiple-output (MIMO) relay; power consumption; quality-of-service (QoS);

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2008.2001978

Filename

4691054