ASK, FSK, and PSK Modulation and Demodulation Programs

I developed this program suite after completing a communication simulation handbook to apply the theoretical knowledge in practice. The implementation includes ASK, FSK, and PSK modulation and demodulation algorithms using mathematical formulations. While the programs are straightforward due to direct formula application, they effectively demonstrate fundamental digital communication concepts. In the ASK implementation, I modulated the carrier amplitude based on digital input signals. For FSK, I implemented frequency switching between predetermined values corresponding to binary states. The PSK portion features phase shifting of the carrier wave according to input data patterns. Each demodulation routine includes synchronization mechanisms and threshold detection for signal recovery. During development, I encountered challenges in signal synchronization and noise handling, which I resolved through literature research and technical consultations. The programs serve as a foundational framework for understanding modulation techniques, with clear opportunities for enhancement including error correction coding, adaptive filtering, and performance optimization. I plan to continue refining these implementations for more sophisticated communication system projects.