MATLAB Code Implementation for FSK Modulation and Demodulation

In this document, I would like to share MATLAB source code for FSK modulation and demodulation implementation. This code provides a comprehensive demonstration featuring detailed algorithm explanations and practical implementation approaches. The implementation includes key MATLAB functions such as fskmod() for modulation and fskdemod() for demodulation, with proper parameter configuration for frequency separation and sampling rates.

The code is structured to clearly demonstrate the complete FSK communication chain, including signal generation, modulation, channel simulation (with optional noise addition), and demodulation processes. It incorporates error rate calculation functionality to evaluate system performance, making it valuable for both beginners and experienced practitioners. The implementation uses coherent detection methods and includes proper synchronization mechanisms to handle phase ambiguities.

This detailed code not only helps users better understand FSK modulation and demodulation principles but also provides hands-on experimentation opportunities. By running this code, users can verify theoretical concepts and strengthen their understanding through practical implementation. The code includes comprehensive comments explaining each processing step and parameter significance, making it suitable for educational and research purposes.

I hope you find this resource valuable and beneficial for your signal processing projects and learning journey!