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Hidden Markov modeling of flat fading channels

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2 Author(s)
Turin, William ; AT&T Labs-Res., Florham Park, NJ, USA ; van Nobelen, R.

Hidden Markov models (HMMs) are a powerful tool for modeling stochastic random processes. They are general enough to model with high accuracy a large variety of processes and are relatively simple allowing us to compute analytically many important parameters of the process which are very difficult to calculate for other models (such as complex Gaussian processes). Another advantage of using HMMs is the existence of powerful algorithms for fitting them to experimental data and approximating other processes. In this paper, we demonstrate that communication channel fading can be accurately modeled by HMMs, and we find closed-form solutions for the probability distribution of fade duration and the number of level crossings

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:16 ,  Issue: 9 )

Date of Publication:

Dec 1998

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