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A Rotation-Based Quasi-Orthogonal Space-Time Block Coded OFDM System over Frequency-Selective Channels

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4 Author(s)
Xiaofeng Lu ; Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Hubei ; Guangxi Zhu ; Yingzhuang Liu ; Xiao Xiao

In this paper, we apply quasi-orthogonal space-time block code through constellation rotation (QOSTBC_CR) in OFDM system, construct the QOSTBC_CR-OFDM code and propose the decoder. Since OFDM can combat frequency-selective channels and the QOSTBC_CR have both full rate and full diversity, the QOSTBC_CR-OFDM performs effectively in frequency-selective channels. Simulation results show that QOSTBC_OR-OFDM achieves better tradeoff between transmission rate and diversity gain. This approves the theoretical analysis

Published in:

Computer and Information Technology, 2005. CIT 2005. The Fifth International Conference on

Date of Conference:

21-23 Sept. 2005