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A fundamental lower bound to the performance of phase estimators over Rician-fading channels

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1 Author(s)
Reggiannini, R. ; Dipt. di Inf. Eng., Pisa Univ., Italy

We present a fundamental lower bound to the mean-square error of estimators of the phase of a sine wave passed through a Rician-fading channel. Explicit expressions for the bound with Gaussian and Rayleigh channels are provided. The bound is derived by analyzing the performance of the Bayes minimum mean-square error phase estimator, and therefore represents the best performance attainable by physically realizable phase estimators over a Rician channel

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Communications, IEEE Transactions on  (Volume:45 ,  Issue: 7 )