Performance of differential unitary space-time modulation over MIMO-OFDM systems

被引：3
|
作者：
Liu, SY [1 ]
Huang, GM [1 ]
Chong, JW [1 ]
机构：
[1] Cent China Normal Univ, Dept Elect & Informat Engn, Wuhan 430079, Peoples R China
来源：
2004 INTERNATIONAL CONFERENCE ON COMMUNICATION, CIRCUITS, AND SYSTEMS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS | 2004年
关键词：
space-time coding; differential unitary space-time modulation (DUSTM); MIMO-OFDM systems;
D O I：
10.1109/ICCCAS.2004.1345983
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a study of the application of DUSTM on MIMO-OFDM systems with frequency-selective fading channels. From the view of correlation analysis between subcarriers of OFDM, we obtain the maximum achievable diversity of DUSTM on MIMO-OFDM systems. Moreover, an efficient implementation strategy based on subcarrier reconstruction is proposed, which transmits all the signals of one signal matrix within an OFDM transmission, and performs differential processing between two adjacent OFDM blocks. The proposed method is capable of obtaining both spatial and multipath diversity while reducing the effect of time variation of channels to minimum. The performance improvement is confirmed by simulation results.
引用
收藏
页码：140 / 144
页数：5
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