MSK Modulation and Demodulation Simulation

This article provides a detailed exposition of the MSK modulation and demodulation simulation program. The implementation begins with integrating an intermediate frequency (IF) carrier to accurately replicate real-world system conditions. The simulation typically involves generating MSK symbols using orthogonal modulation with continuous phase transitions, where the frequency deviation equals half the symbol rate. Key functions include waveform generation using cosine/sine pulse shaping and phase continuity maintenance through cumulative phase tracking. Following the modulation process, the demodulation algorithm employs coherent detection with carrier recovery loops and symbol timing synchronization. Performance analysis encompasses comprehensive statistical evaluation of system metrics, including Bit Error Rate (BER) calculations through Monte Carlo simulations, Symbol Error Rate (SER) measurements, and spectral efficiency assessments. The BER analysis typically compares theoretical curves with simulated results using error counting algorithms over additive white Gaussian noise (AWGN) channels. These analyses facilitate deeper understanding of system performance characteristics and provide reference points for further research and optimization efforts. The article aims to assist researchers and practitioners in related fields by demonstrating practical implementation approaches for MSK systems with performance validation methodologies.