Simulation of OFDM System under Rayleigh Fading Channel

This project presents a MATLAB-based simulation of an Orthogonal Frequency Division Multiplexing (OFDM) system operating under Rayleigh fading channel conditions. The simulation framework is designed to analyze the transmission performance of OFDM systems in Rayleigh fading environments and evaluate their behavior under different Signal-to-Noise Ratio (SNR) conditions. Key implementation aspects include: - Modulation scheme configuration (BPSK, QPSK, or QAM) with adaptive modulation capabilities - Dynamic adjustment of subcarrier numbers and bandwidth parameters - Rayleigh fading channel modeling using complex Gaussian random variables - Cyclic Prefix (CP) insertion and removal for mitigating inter-symbol interference - Fast Fourier Transform (FFT) and Inverse FFT (IFFT) operations for orthogonal subcarrier modulation The simulation involves systematic parameter tuning and optimization of OFDM system components, followed by detailed analysis and interpretation of performance metrics such as Bit Error Rate (BER), Symbol Error Rate (SER), and spectral efficiency. The results provide valuable insights into OFDM system behavior in practical applications and optimization strategies for real-world implementations. This research serves as a fundamental reference for further investigation of OFDM system performance under various channel conditions, offering implementation guidelines and analytical frameworks for wireless communication system designers. The MATLAB code structure includes modular functions for signal generation, channel modeling, receiver processing, and performance evaluation, enabling flexible parameter adjustments and extended research applications.