Title :
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
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;
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
DOI :
10.1109/RWS.2010.5434201
