A new method for estimation of the amplitude distribution of signals
نویسندگان
چکیده
A hidden Markov model method for estimating an a posteriori distribution of the amplitude of communications signals is presented. As the signal to noise ratio decreases the hidden Markov model method is shown to perform significantly better than a conventional histogram method for characterising the amplitude distribution. The HMM estimation is performed within a Expectation Maximisation method in order to improve the estimates of the transition probabilities used in the HMM and the resulting estimated amplitude distribution.
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