Simulation of a Channelized MSK Communication System with MATLAB Implementation

This paper presents a complete set of MATLAB programs for simulating a channelized MSK communication system. The implementation includes digital signal processing modules for generating MSK signals with proper phase continuity, channel modeling with additive white Gaussian noise (AWGN) and fading effects, and coherent demodulation using matched filters. The code structure follows modular design principles with separate functions for signal generation (msk_modulator.m), channel simulation (channel_model.m), and demodulation (msk_demodulator.m). Key algorithms implemented include minimum shift keying modulation with half-sinusoidal shaping pulses, maximum likelihood detection, and bit error rate (BER) calculation through Monte Carlo simulations. Detailed performance analysis validates the system's reliability under various signal-to-noise ratio conditions, with BER curves comparing theoretical and simulated results. The discussion integrates theoretical foundations from digital communication principles with practical implementation aspects, providing insights into system optimization techniques and performance trade-offs. This work serves as a comprehensive technical resource containing both executable simulation code and in-depth analytical documentation.