Performance comparisons of MIMO techniques with application to WCDMA systems

作     者：Li, CX Wang, XD 

作者机构：Columbia Univ Dept Elect Engn New York NY 10027 USA 

出 版 物：《EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING》 (EURASIP信号处理进展杂志)

年 卷 期：2004年第2004卷第5期

页      面：649-661页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：National Science Foundation, NSF Directorate for Computer and Information Science and Engineering, CISE, (0225721, 0225826) Directorate for Computer and Information Science and Engineering, CISE 

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

摘      要：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 SNR 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.