MIMO Multiuser Precoding System using Weighted MMSE Prefilter and Vector Perturbation

Author

Kyeong Jin Kim ; Jianzhong Zhang ; Iltis, R.A.

Author_Institution

Nokia Inc., Irving, TX

fYear

2007

fDate

9-11 Jan. 2007

Firstpage

103

Lastpage

104

Abstract

In this paper, we propose a new jointly optimized linear prefilter and nonlinear vector perturbation approach to the multiple transmit multiple receive (MIMO)-multiuser (MU) precoder system. As a closest lattice point search problem in the vector perturbation based method, the suboptimal QRD-M is used. For the prefilter design, the weighted MMSE criterion is used. Simulation results show that the proposed jointly weighted optimized linear prefilter with nonlinear perturbation vectors can achieve better BER performance

Keywords

MIMO communication; error statistics; filtering theory; least mean squares methods; precoding; search problems; BER performance; MIMO multiuser precoding system; closest lattice point search problem; jointly optimized linear prefilter; multiple transmit multiple receive multiuser precoder system; nonlinear vector perturbation approach; suboptimal QRD-M; weighted MMSE prefilter; Bit error rate; Broadcasting; Drives; Lattices; MIMO; Multiaccess communication; Search problems; Slot antennas; Time division multiple access; Vectors; MIMO; Multiuser Precoding; QRD-M; Vector Perturbation; Weighted MMSE;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium, 2007 IEEE

Conference_Location

Long Beach, CA

Print_ISBN

1-4244-0444-4

Type

conf

DOI

10.1109/RWS.2007.351742

Filename

4160660