MATLAB Implementation of an OFDM Communication System

This MATLAB source code implements a complete OFDM (Orthogonal Frequency Division Multiplexing) communication system, featuring essential components such as signal modulation/demodulation, channel estimation, and encoding/decoding algorithms. The code demonstrates practical implementation of OFDM technology, which effectively enhances data transmission rates and improves interference resistance in wireless communications. The program includes key functional modules: QAM/PSK modulation schemes for subcarrier mapping, IFFT/FFT operations for orthogonal frequency transformation, cyclic prefix insertion/removal for multipath mitigation, and pilot-based channel estimation techniques for equalization. Students and researchers can use this codebase to deepen their understanding of OFDM principles, conduct performance simulations, and develop custom modifications for academic research or engineering applications. This implementation serves as both an educational tool for learning digital communication concepts and a practical foundation for developing advanced wireless systems. The well-structured code allows users to analyze system performance under different channel conditions, modify parameters like FFT size and guard interval length, and test various error correction coding schemes. We hope this resource assists communication engineering students in mastering OFDM technology and facilitates their research and practical implementation projects in wireless communications.