MATLAB Implementation of OFDM System Simulation with Error Correction Coding and Multi-path Fading Analysis

This OFDM system simulation implements convolutional encoding and interleaving techniques for robust data transmission, utilizing both 16-QAM and QPSK modulation schemes. The simulation models two distinct channel impairments: multi-path fading and Rayleigh fading, providing realistic wireless channel conditions. The MATLAB implementation includes critical components such as channel estimation algorithms (using pilot symbols), frequency offset compensation techniques, and comprehensive signal-to-noise ratio (SNR) analysis. To enhance system robustness against interference, the simulation incorporates forward error correction coding and adaptive modulation techniques. The code structure allows for comparative analysis of different parameter configurations, enabling systematic evaluation of system performance metrics like bit error rate (BER) and spectral efficiency. Additional interference scenarios can be integrated into the simulation framework, including narrowband interference and multi-user interference models, to further investigate system robustness and fault tolerance. The implementation utilizes MATLAB's Communication Toolbox functions for modulation/demodulation, channel modeling, and error correction coding. Through comprehensive OFDM system simulation, this implementation provides valuable insights into system operation principles and performance characteristics, serving as a practical reference for real-world applications and system optimization. The modular code design facilitates easy extension with additional features like MIMO configurations or advanced equalization techniques.