Subspace-Based Blind Channel Estimation for STBC-OFDM

Daofeng Xu Daofeng Xu,Luxi Yang Luxi Yang

doi:10.1109/icassp.2006.1660981

Subspace-Based Blind Channel Estimation for STBC-OFDM

Daofeng Xu Daofeng Xu, Luxi Yang Luxi Yang

https://doi.org/10.1109/icassp.2006.1660981

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Publication Date: May 14, 2006

Citations: 5

#Blind Estimation #Space-time Block Coding + Show 8 more

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Abstract

This paper proposes a subspace-based blind channel estimation method for space-time coded OFDM system. Using only the redundancy induced by OFDM modulation and space-time block coding (STBC), channel state information (CSI) can be blindly estimated, up to two scalar ambiguities for Alamouti STBC or one for 4T4A3K STBC, even when a single receiving antenna is equipped. Compared with other blind channel estimation method for STBC-OFDM, this method needs neither pre-coding nor over-sampling, and thus has higher system data rate and lower complexity. Simulation results demonstrate the effectiveness of this method.

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