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An Adaptive Constant Modulus Blind Equalization Algorithm and Its Stochastic Stability Analysis

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2 Author(s)
Abrar, S. ; Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool, UK ; Nandi, A.K.

A constant modulus algorithm is presented for blind equalization of complex-valued communication channels. The proposed algorithm is obtained by solving a novel deterministic optimization criterion which comprises the minimization of a priori as well as a posteriori dispersion error, leading to an update equation having a particular zero-memory continuous Bussgang-type nonlinearity. We also derive a stochastic bound for the range of step-sizes for a generic Bussgang-type constant modulus algorithm. The theoretical result is validated through computer simulations.

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Signal Processing Letters, IEEE  (Volume:17 ,  Issue: 1 )