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Finite-alphabet and decision-feedback based channel estimation for space-time coded OFDM systems

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3 Author(s)
Zhigang Chen ; Sch. of Electron. & Inf. Eng., Xi''an Jiaotong Univ. ; Taiyi Zhang ; Zhengwei Gong

A novel blind channel estimation scheme is presented for space-time coded OFDM (STC-OFDM) systems. This scheme is composed of coarse channel estimation by exploiting the finite-alphabet property of information signals and fine channel estimation by using decision-directed method, which employs the priori knowledge of the transmitted signals other than the finite-alphabet property of mapping constellation. At the cost of a little more computational complexity, it achieves better performance than the competitive one. The scheme is tested with simulations and also compared with the subspace-based channel estimation

Published in:

Mobile Future, 2006 and the Symposium on Trends in Communications. SympoTIC '06. Joint IST Workshop on

Date of Conference:

24-27 June 2006

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