GMSK Modulation Implementation and Performance Analysis

In GSM communications, Gaussian Minimum Shift Keying (GMSK) modulation has been successfully implemented and deployed. This Simulink-based module demonstrates GMSK modulation implementation featuring Gaussian pulse shaping filters with BT product configuration and differential encoding components. The performance evaluation includes Bit Error Rate (BER) analysis using Monte Carlo simulations, spectral efficiency measurements through FFT-based spectral analysis, and eye diagram generation for signal quality assessment. Further research directions encompass detailed investigation of GMSK modulation principles including its constant envelope property and spectral efficiency advantages, comparative analysis with other modulation schemes like QPSK and MSK highlighting its superior spectral characteristics, and practical implementation considerations such as computational complexity and hardware requirements. The module also explores practical limitations including adjacent channel interference mitigation and synchronization challenges, along with potential enhancements like adaptive modulation schemes and hybrid ARQ techniques. Future development may focus on software-defined radio (SDR) implementations using MATLAB Coder for hardware deployment and machine learning-based optimization of modulation parameters. GMSK modulation remains a fundamental communication technique with broad application prospects in wireless communication systems, particularly for mobile communications and low-power IoT devices.