An efficient block diagonalization method for multiuser MIMO downlink

Author

An, Jie ; Liu, Yuan-an ; Liu, Fang

Author_Institution

Sch. of Electron. Eng., Beijing Univ. of Post & Telecommun., Beijing, China

fYear

2012

fDate

21-23 April 2012

Firstpage

145

Lastpage

148

Abstract

Block diagonalization (BD) based on singular value decomposition (SVD) is a well-known precoding method that eliminates interuser interference in multiuser multi-input multi-output (MIMO) broadcast channels, but it is computationally inefficient. In this paper, we propose an alternative method replacing SVD to obtain the precoding matrix in the BD scheme. Analysis and simulation results show that our proposal has lower complexity than the conventional BD method, while there is no any degradation in sum throughput.

Keywords

MIMO communication; broadcast channels; interference suppression; precoding; singular value decomposition; SVD; block diagonalization method; conventional BD method; inter-user interference elimination; multiuser MIMO downlink; multiuser multi-input multi-output broadcast channels; precoding matrix; singular value decomposition; sum throughput; Algorithm design and analysis; Base stations; Complexity theory; Downlink; MIMO; Receiving antennas; MIMO; broadcast channels; multiuser; precoding;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4577-1414-6

Type

conf

DOI

10.1109/CECNet.2012.6201765

Filename

6201765