Sum-Rate Analysis of Multiuser MIMO System with Zero-Forcing Transmit Beamforming

Author

Lu, Peng ; Yang, Hong-Chuan

Author_Institution

Dept. of Elec. & Comp. Engr., Univ. of Victoria, Victoria, BC

fYear

2008

Firstpage

4123

Lastpage

4127

Abstract

In this paper, we present the exact sum-rate analysis of the multiuser multiple-input multiple-output (MIMO) broadcast channel with zero-forcing transmit beamforming. We develop the analytical expressions of the ergodic sum-rate for two low-complexity user selection strategies for the important 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 offered by multiuser diversity.

Keywords

MIMO communication; antennas; communication complexity; diversity reception; channel power gain; directional gain; dual-transmit-antenna scenario; ergodic sum-rate; low-complexity user selection strategies; multiuser diversity; multiuser multiple-input multiple-output broadcast channel; parameter optimization problem; sum-rate analysis; zero-forcing transmit beamforming; Array signal processing; Base stations; Broadcasting; Communications Society; Costs; Design optimization; Interference; MIMO; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2008. ICC '08. IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2075-9

Electronic_ISBN

978-1-4244-2075-9

Type

conf

DOI

10.1109/ICC.2008.774

Filename

4533810