Linear Precoding for Multiuser MIMO Systems with Multiple Base Stations

Author

Azzam, Imad H. ; Adve, Raviraj S.

Author_Institution

Res. in Motion, Waterloo, ON, Canada

fYear

2009

fDate

14-18 June 2009

Firstpage

1

Lastpage

6

Abstract

Linear precoding for multiuser multiple input multiple output (MIMO) cellular systems has generally focused on a single isolated cell. A crucial tool in algorithm development has been a downlink/uplink duality. Here we investigate downlink multiuser communications across multiple cells. Previous work identified the resulting asynchronous interference as a key issue. We prove the existence of a downlink/uplink duality requiring time reversal. This duality is used to develop an effective linear precoding algorithm for multiuser, multi-cell, MIMO systems. Simulation results illustrate the importance of accounting for, and to quantify the loss due to, asynchronous interference.

Keywords

MIMO communication; cellular radio; channel coding; linear codes; multiuser channels; precoding; linear precoding algorithm; multiple base station; multiple input multiple output cellular system; multiuser MIMO system; multiuser communication; telecommunication channel; Base stations; Decoding; Downlink; Frequency; Interference; Land mobile radio cellular systems; MIMO; Signal to noise ratio; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2009. ICC '09. IEEE International Conference on

Conference_Location

Dresden

ISSN

1938-1883

Print_ISBN

978-1-4244-3435-0

Electronic_ISBN

1938-1883

Type

conf

DOI

10.1109/ICC.2009.5199137

Filename

5199137