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

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3 Author(s)
Shouyin Liu ; Dept. of Electron. & Inf. Eng., Central China Normal Univ., China ; Guangming Huang ; Jong-Wha Chong

The paper presents a study of the application of DUSTM (differential unitary space-time modulation) on MIMO-OFDM systems with frequency-selective fading channels. From the point of view of the analysis of correlation between OFDM subcarriers, 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 channel time variations to a minimum. The performance improvement is confirmed by simulation results.

Published in:
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on  (Volume:1 )

Date of Conference: 27-29 June 2004

Page(s):
140 - 144 Vol.1
Print ISBN:
0-7803-8647-7
INSPEC Accession Number:
8088697
Digital Object Identifier :
10.1109/ICCCAS.2004.1345983
Product Type:
Conference Publications

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