Comprehensive BER Calculation for OFDM Systems with MATLAB Implementation

This paper presents a comprehensive MATLAB implementation for calculating the bit error rate (BER) of OFDM systems, complete with BER curve visualization. The program includes key components such as QPSK/16-QAM modulation schemes, IFFT/FFT operations for orthogonal subcarrier generation, and AWGN/Rayleigh fading channel models. The code implements proper cyclic prefix insertion, channel equalization techniques, and signal demodulation processes. The BER curves generated through Monte Carlo simulations help analyze OFDM system performance under various channel conditions. The paper also provides detailed background information on OFDM technology and its application domains. By examining the BER performance curves, researchers can better understand how OFDM systems behave under different signal-to-noise ratios and channel impairments. Additionally, the work discusses common enhancement methods such as channel coding, adaptive modulation, and multiple antenna techniques to improve OFDM system reliability and throughput. This makes the paper highly valuable for researchers and engineers working on OFDM technology development and implementation.