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Channel estimation by symmetrical clustering

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3 Author(s)
Montalvao Filho, J.R. ; EPH Dept., Inst. Nat. des Telecommun., Evry, France ; Dorizzi, B. ; Mota, J.C.M.

A new blind channel estimation algorithm is presented. This algorithm comes from the well-known maximum likelihood estimation approach. However, we intentionally "smooth" the joint probability density function (PDF) of a finite set of observations in order to reduce the computational burden. As a result, we obtain an online clustering algorithm whose main characteristic is the constraint of symmetry among cluster centers. Computational simulations are used to evaluate this algorithm

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Signal Processing, IEEE Transactions on  (Volume:50 ,  Issue: 6 )