ISSN: 1304-7191 | E-ISSN: 1304-7205
Evaluation of the Error Performance of the IEEE802.16 Standard Based on a Hidden Markov Model
1Department of Statistics, Science and Research Branch, Islamic Azad University, Tehran, IRAN
2Department of Statistics, North Tehran Branch, Islamic Azad University, Tehran, IRAN
Sigma J Eng Nat Sci 2019; 37(4): 1481-1496
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IEEE802.16 (WiMAX) is a standard that supports high data rate in a wide area with multi-traffic communication, low implementation and the possibility of creating broadcast, multicast and mesh networks. In this paper the Hidden Markov Model as a Discrete Channel Model has been employed to model the burst errors generated from IEEE 802.16/WiMAX; moreover, the precise Hidden Markov Models using Baum-Welch Algorithm have been obtained by estimating the optimal order of these models with comparing statistics such as Average log-likelihood, Probability of Error, 𝑃(0𝑚|1) and Auto-Correlation function. Additionally, the parameters of the best models have been derived. The impacts of a number of Baum-Welch Algorithm iterations and the modulation order on the optimal order estimation with respect to different (𝑇𝑠) were investigated using extensive simulations.