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Implementation of Bayesian Techniques for Demodulation

Demodulation of received signals for a known channel parameters over Rayleigh fading channel is done by BEM (Bayesian Estimation Maximization) algorithm using MAP (Maximum A Posteriori) Probability decisions. Simulation results were produced using this demodulator for the specified mobile satellite based trans-receiver system to find the BER (Bit Error Rate). Comparisons are made to that of a QPSK (Quadrature Phase Shift Keying) demodulator to show that the performance is better in our designed demodulator with respect to BER. These simulation results are produced using Matlab platform. Keywords— Bayesian Demodulator, Deconvolution Methods, Bayesian Estimation Methods, CPM, Bayesian Estimation Maximization.