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A frequency diversity scheme using linear constellation precoding for V-BLAST OFDM system

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4 Author(s)
Daiming Qu ; Huazhong University of Science & Technology ; Bo Gui ; Guangxi Zhu ; Zhonglin Chen

In this paper a VBLAST-OFDM system with linear constellation precoding (LCP) is proposed for wideband wireless communications. Frequency diversity is obtained through the LCP precoding across OFDM subcarriers. Also a joint VBLASTLCP decoder which combines classical V-BLAST successive interference cancellation with Maximum Likelihood decoding for the precoding is proposed. Computer simulation shows that VBLAST-OFDM-LCP has a performance gain of at least 8.5dB at a certain symbol error rate compared with VBLAST-OFDM.

Published in:

Communications, 2004 IEEE International Conference on  (Volume:1 )

Date of Conference:

20-24 June 2004