Joint beamforming and power control in downlink multiuser MIMO systems

Author

Abraham, Shiny ; Popescu, Dimitrie C. ; Dobre, Octavia A.

Author_Institution

Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA

fYear

2010

fDate

10-14 Jan. 2010

Firstpage

444

Lastpage

447

Abstract

In this paper we discuss joint beamforming and power control for downlink multiuser MIMO systems with target signal-to-interference+noise ratios (SINR) constraints. We derive necessary conditions for minimizing total interference at downlink receivers and present an algorithm which adapts the beamforming vectors and powers incrementally to meet specified SINR targets with minimum powers. The proposed algorithm is illustrated with numerical examples obtained from simulations.

Keywords

MIMO communication; array signal processing; interference (signal); multiuser channels; power control; radio receivers; SINR targets; beamforming vectors; downlink multiuser MIMO systems; downlink receivers; power control; signal-to-interference noise ratios; Array signal processing; Base stations; Covariance matrix; Diversity reception; Downlink; Interference constraints; MIMO; Power control; Signal to noise ratio; Transmitters; MIMO systems; beamforming; downlink; power control; quality of service;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2010 IEEE

Conference_Location

New Orleans, LA

Print_ISBN

978-1-4244-4725-1

Electronic_ISBN

978-1-4244-4726-8

Type

conf

DOI

10.1109/RWS.2010.5434201

Filename

5434201