Multiuser MIMO Downlink: Multiplexing Gain Without Free Channel Information

Author

Salim, Umer ; Slock, Dirk

Author_Institution

Mobile Commun. Dept., Eurecom Inst., Sophia Antipolis

fYear

2008

fDate

Nov. 30 2008-Dec. 4 2008

Firstpage

1

Lastpage

5

Abstract

A multiuser MIMO system is considered with no initial assumption of channel state information (CSI) at any of the receivers or the BS transmitter. For a system working under frequency-division duplexing (FDD) mode, simple practically realizable transmission strategy is proposed which provides necessary channel state information to both sides with minimal resource utilization for downlink (DL) data transmission. For the given transmission strategy, high SNR degrees of freedom (DOF) for the DL channel are specified. If the users have data to transmit in the uplink (UL) direction, with no extra burden of training, full multiplexing gain of the multiple-access channel (MAC) can be achieved. Thus the given strategy makes the system fully scalable for the data transmission in both directions.

Keywords

MIMO communication; data communication; frequency division multiplexing; multi-access systems; channel state information; downlink data transmission; frequency-division duplexing mode; multiple-access channel; multiplexing gain; multiuser MIMO downlink; Broadcasting; Channel state information; Data communication; Downlink; Frequency; MIMO; Mobile communication; Multiaccess communication; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops, 2008 IEEE

Conference_Location

New Orleans, LO

Print_ISBN

978-1-4244-3061-1

Electronic_ISBN

978-1-4244-3062-8

Type

conf

DOI

10.1109/GLOCOMW.2008.ECP.90

Filename

4746675