2FSK Modulation and Demodulation Based on Simulink

In the field of communications, 2FSK (Frequency Shift Keying) modulation and demodulation represents a fundamental modulation technique. This implementation utilizes the Simulink platform to achieve both coherent and non-coherent demodulation schemes. Coherent demodulation employs phase-locked loops and matched filters to provide superior performance and reliability through precise carrier synchronization. Non-coherent demodulation, implemented using envelope detectors or frequency discriminators, offers simpler architecture with reduced sensitivity to phase variations. The Simulink model incorporates key components including: sine wave generators for carrier signals, binary sequence generators for data input, switching mechanisms for frequency hopping, and comparator circuits for threshold detection. Through proper configuration of these blocks and parameter tuning (such as frequency deviation and sampling rates), the system enables efficient data transmission and signal processing in communication systems, demonstrating practical implementation of digital modulation principles with real-time simulation capabilities.