Fundamental OFDM System Simulation with BPSK Modulation and BER Performance Analysis

I present a fundamental OFDM system simulation program utilizing BPSK modulation. This implementation computes bit error rates for both OFDM-based transmission and conventional single-carrier systems. The simulation employs key OFDM processing stages including: serial-to-parallel conversion, inverse fast Fourier transform (IFFT) for multicarrier modulation, cyclic prefix insertion to mitigate inter-symbol interference, and additive white Gaussian noise (AWGN) channel modeling. We can further investigate OFDM system performance under various channel conditions and compare transmission effectiveness across different modulation schemes. The simulation framework allows for extensions including higher-order modulations (QPSK, 16-QAM) and forward error correction coding techniques to optimize system performance. The MATLAB-based implementation uses built-in functions like fft/ifft for orthogonal subcarrier generation and bpskmod/bpskdemod for symbol mapping. Let us comprehensively explore OFDM system aspects including channel equalization methods, peak-to-average power ratio (PAPR) reduction techniques, and synchronization algorithms to deepen understanding and practical application of this multicarrier communication technology.