MATLAB Code Implementation of FSK Modulation and Demodulation

FSK (Frequency Shift Keying) modulation and demodulation is a widely used digital modulation technique that represents digital information by varying the carrier frequency. This program implements FSK modulation and demodulation using MATLAB Simulink, leveraging its graphical block diagram environment for signal processing system design. The implementation utilizes Simulink's communication blockset components including sine wave generators for carrier signals, switch blocks for frequency selection based on binary input, and filters with correlators for coherent detection in the demodulation process. Through this simulation model, users can study and understand both the theoretical principles and practical implementation methods of FSK technology. The modular Simulink architecture allows for easy modification and optimization of parameters such as frequency deviation, data rates, and filter characteristics to adapt the system to various application scenarios and requirements. The model demonstrates key functions like frequency switching synchronization, bit error rate analysis, and spectrum visualization capabilities for comprehensive performance evaluation.