Detailed Documentation of OFDM Principles with International Explanations

OFDM (Orthogonal Frequency Division Multiplexing) principle is a modulation technique widely used in wireless communication systems. It enhances transmission efficiency and interference resistance by dividing digital signals into multiple low-speed subcarriers for parallel transmission. The detailed international documentation provides comprehensive explanations and implementation methodologies for OFDM systems. Through MATLAB implementation, developers can efficiently simulate OFDM principles using key functions like fft(), ifft() for Fourier transformations, and comm.OFDMModulator system objects. The implementation allows visualization through various analytical graphs including: time-domain waveforms showing signal amplitude variations, frequency-domain plots demonstrating orthogonal subcarrier arrangement, phase diagrams illustrating carrier synchronization, and power spectrum density graphs for signal power distribution analysis. These visualizations help in better understanding and demonstrating OFDM system characteristics, including cyclic prefix addition, subcarrier spacing calculations, and modulation/demodulation processes using QAM or PSK schemes.