Open Access

Performance Comparisons of MIMO Techniques with Application to WCDMA Systems

EURASIP Journal on Advances in Signal Processing20042004:757401

DOI: 10.1155/S1110865704309029

Received: 11 December 2002

Published: 23 May 2004

Abstract

Multiple-input multiple-output (MIMO) communication techniques have received great attention and gained significant development in recent years. In this paper, we analyze and compare the performances of different MIMO techniques. In particular, we compare the performance of three MIMO methods, namely, BLAST, STBC, and linear precoding/decoding. We provide both an analytical performance analysis in terms of the average receiver and simulation results in terms of the BER. Moreover, the applications of MIMO techniques in WCDMA systems are also considered in this study. Specifically, a subspace tracking algorithm and a quantized feedback scheme are introduced into the system to simplify implementation of the beamforming scheme. It is seen that the BLAST scheme can achieve the best performance in the high data rate transmission scenario; the beamforming scheme has better performance than the STBC strategies in the diversity transmission scenario; and the beamforming scheme can be effectively realized in WCDMA systems employing the subspace tracking and the quantized feedback approach.

Keywords and phrases

BLAST space-time block coding linear precoding/decoding subspace tracking WCDMA

Authors’ Affiliations

(1)
Department of Electrical Engineering, Columbia University

Copyright

© Li and Wang 2004