Low Complexity Scheduling and Beamforming for Multiuser MIMO Systems

Author

Kountouris, Marios ; De Francisco, Ruben ; Gesbert, David ; Slock, Dirk T M ; Salzer, Thomas

Author_Institution

R&D, France Telecom., Issy-les-Moulineaux

fYear

2006

fDate

2-5 July 2006

Firstpage

1

Lastpage

5

Abstract

The problem of joint scheduling and beamforming for a multiple antenna broadcast channel with partial channel state information at the transmitter (CSIT) is considered. We show how long-term statistical channel knowledge can be efficiently combined with instantaneous low-rate feedback for user selection and linear beamforming. A low complexity algorithm based on an estimate (bound) of the multiuser interference is proposed. Our scheme is shown to exhibit significant throughput gain over opportunistic techniques, approaching the sum rate of full CSIT for small angle spreads

Keywords

MIMO communication; antenna arrays; broadcast channels; interference (signal); statistical analysis; telecommunication network management; wireless channels; linear beamforming; low complexity scheduling; multiple antenna broadcast channel; multiuser MIMO system beamforming; multiuser interference; opportunistic techniques; partial channel state information; statistical channel knowledge; user selection; Array signal processing; Broadcasting; Channel state information; Feedback; Interference; MIMO; Multiaccess communication; Receiving antennas; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Conference_Location

Cannes

Print_ISBN

0-7803-9710-X

Electronic_ISBN

0-7803-9711-8

Type

conf

DOI

10.1109/SPAWC.2006.346488

Filename

4153975