Impact of the propagation environment on the performance of space-frequency coded MIMO-OFDM

被引：213

作者：

Bölcskei, H

Borgmann, M

Paulraj, AJ

机构：

[1] Swiss Fed Inst Technol, Commun Technol Lab, CH-8092 Zurich, Switzerland

[2] Stanford Univ, Dept Elect Engn, Informat Syst Lab, Stanford, CA 94305 USA

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2003年 / 21卷 / 03期

关键词：

channel modeling; diversity; multiple-input multiple-output (MIMO); orthogonal frequency-division multiplexing; (OFDM); space-frequency coding; spatial multiplexing;

D O I：

10.1109/JSAC.2003.809723

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Previous work on space-frequency coded multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) has been restricted to idealistic propagation conditions. In this paper, using a broadband MIMO channel model taking into account Ricean K-factor, transmit and receive angle spread, and antenna spacing, we study the impact of the propagation environment on the performance of space-frequency coded MIMO-OFDM. For a given space-frequency code, we quantify the achievable diversity order and coding gain as a function of the propagation parameters. We find that while the presence of spatial receive correlation, affects all space-frequency codes equally, spatial fading correlation at the transmit array can result in widely varying performance losses. High-rate space-frequency codes such as spatial multiplexing are typically significantly more affected by transmit correlation than low-rate codes such as space-frequency block codes. We show that in the MIMO Ricean case the presence of frequency-selectivity typically results in improved performance compared to the frequency-flat case.

引用

页码：427 / 439

页数：13

共 26 条

[1] A simple transmit diversity technique for wireless communications [J].