A Multiuser Zeroforcing System with Reduced Near-Far Problem and MIMO Channel Correlations

Author

Dawod, Nadem H. ; Hafez, Roshdy ; Marsland, Ian

Author_Institution

Dept.of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont.

fYear

2006

fDate

38838

Firstpage

936

Lastpage

939

Abstract

The near-far problem and the correlations in a MIMO channel are two major obstacles in the way of widely implementing space division multiple access (SDMA) systems. In this paper we investigate the effect of distributing the basestation antennas and the reduction of intra-user correlations on the performance of a MIMO-OFDM system in which a basestation, composed of distributed antenna arrays, is communicating (downlink transmission) with several single antenna mobile users. The arrays are located at different sites in a Ricean-Lognormal channel environment. Very significant improvement in system performance is achieved due to the improved spatial properties of the MIMO channel and due to the reduction of channel matrix correlations

Keywords

MIMO communication; OFDM modulation; Rician channels; antenna arrays; correlation methods; mobile antennas; multiuser channels; space division multiple access; MIMO channel correlation; basestation antenna; multiuser zeroforcing system; space division multiple access system; Antenna arrays; Channel capacity; Downlink; Eigenvalues and eigenfunctions; Interference; MIMO; Mobile antennas; Multiaccess communication; Scattering; Transmitting antennas; Correlations; MIMO; Near-Far problem; SDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on

Conference_Location

Ottawa, Ont.

Print_ISBN

1-4244-0038-4

Electronic_ISBN

1-4244-0038-4

Type

conf

DOI

10.1109/CCECE.2006.277360

Filename

4054814