This document analyzes the bit error rate (BER) performance of orthogonal frequency-division multiplexing (OFDM) using MATLAB simulation. It simulates OFDM transmissions with varying signal-to-noise ratios (SNR) and multipath propagation effects. The BER is observed to increase with higher number of carriers, SNR, and multipath effects. At low SNR, multipath has little impact on BER, but more impact at high SNR. Transmissions with fewer carriers show more immunity to multipath effects. The simulation allows changing variables like carrier number, noise level, delay, and amplitude of multipath echoes to observe their effects on BER.