BER Simulation of OFDM System with QPSK Modulation

A comprehensive OFDM bit error rate simulation program for QPSK systems, consisting of MATLAB implementation files including comb.m, delay.m, fade.m, giins.m, girem.m, ofdm_fading.m, qpskdemod.m, qpskmod.m, and sefade.m, implementing complete OFDM chain with modulation, fading channel, and BER calculation.