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Subspace-Based Blind Channel Estimation for SISO, MISO and MIMO OFDM Systems

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2 Author(s)
Feifei Gao ; Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119260. Email: feifeigao@nus.edu.sg ; Nallanathan, A.

We develop a simple subspace-based blind channel estimation technique for single-input single-output (SISO) and multi-input multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems based on a non-redundant linear block precoding. A novel contribution is that the proposed method can be applied for channel estimation in multi-input single-output (MISO) systems, where the traditional subspace based methods cannot be applied. Further consideration that can eliminate the multi-dimensional ambiguity for multiple transmitter scenarios is also provided. The numerical results clearly show the effectiveness of our proposed algorithm.

Published in:

Communications, 2006. ICC '06. IEEE International Conference on  (Volume:7 )

Date of Conference:

June 2006

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