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Blind adaptive channel estimation in ofdm systems

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2 Author(s)
Doukopoulos, X.G. ; France Telecom R&D ; Moustakides, G.V.

We consider the problem of blind channel estimation in zero padding OFDM systems, and propose blind adaptive algorithms in order to identify the impulse response of the multipath channel. In particular, we develop RLS and LMS schemes that exhibit rapid convergence combined with low computational complexity and numerical stability. Both versions are obtained by properly modifying the orthogonal iteration method used in numerical analysis for the computation of singular vectors. With a number of simulation experiments we demonstrate the satisfactory performance of our adaptive schemes under diverse signaling conditions

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Wireless Communications, IEEE Transactions on  (Volume:5 ,  Issue: 7 )