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Modulo-2 \pi phase sequence estimation (Corresp.)

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3 Author(s)

The probabilistic evolution of random walk on the circle is studied, and the results are used to derive a maximum {em a posteriori} probability (MAP) sequence estimator for phase. The sequence estimator is a Viterbi tracker for tracking phase on a finite-dimensional grid in [-\pi,\pi) . The algorithm is shown to provide a convenient method for obtaining fixed-lag phase estimates. Performance characteristics are presented and compared with several published nonlinear filtering algorithms.

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Information Theory, IEEE Transactions on  (Volume:26 ,  Issue: 5 )