Sum-rate analysis of multiuser MIMO system with zero-forcing transmit beamforming

Author

Lu, Peng ; Yang, Hong-Chuan

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada

Volume

57

Issue

9

fYear

2009

fDate

9/1/2009 12:00:00 AM

Firstpage

2585

Lastpage

2589

Abstract

In this letter, we present the exact sum-rate analysis of the multiuser multiple-input multiple-output (MIMO) systems with zero-forcing transmit beamforming (ZFBF). We develop the analytical expressions of the ergodic sum-rate for two low-complexity user selection strategies for the dual-transmit-antenna scenario. Based on the analytical results, we examine the parameter optimization problem to properly trade off between channel power gain and directional gain in term of maximizing the ergodic sum rate.

Keywords

MIMO communication; array signal processing; multiuser channels; channel directional gain; channel power gain; dual-transmit-antenna scenario; multiuser MIMO system; multiuser multiple-input multiple-output system; parameter optimization; sum-rate analysis; zero-forcing transmit beamforming; Analytical models; Array signal processing; Base stations; Broadcasting; Design optimization; Interference elimination; MIMO; Random variables; Transmitting antennas; Wireless communication; MIMO broadcast channel, zero-forcing beamforming, multiuser diversity, sum-rate analysis, and wireless communications.;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2009.09.070583

Filename

5281747