2FSK MATLAB Simulation

This article explores frequency shift keying (FSK) modulation simulation with MATLAB implementation. FSK is a digital modulation technique that converts digital information into analog signals by altering the carrier frequency to transmit digital data - an efficient communication method. In MATLAB simulations, we utilize built-in functions like fskmod for modulation and fskdemod for demodulation, employing algorithms that represent binary '0' and '1' using distinct frequency tones. The simulation typically involves generating random binary data, applying FSK modulation with specified frequency separation, adding AWGN channel noise using awgn function, and evaluating bit error rate (BER) performance. Key implementation considerations include proper sampling rate selection, frequency deviation calculation, and matched filter design for optimal detection. During simulation development, factors like noise characteristics, signal distortion, and synchronization issues must be accounted for to ensure accurate and reliable results. Performance analysis often includes constellation diagram plotting, spectral analysis using pwelch function, and BER curve generation under varying SNR conditions.