BER vs SNR Performance Analysis for a 4x4 MIMO-OFDM System

This program generates BER versus SNR performance curves for a 4x4 MIMO-OFDM (Multiple Input Multiple Output - Orthogonal Frequency Division Multiplexing) system. The implementation combines MIMO technology, which enhances transmission capacity and signal quality through spatial diversity, with OFDM modulation that improves interference resistance and spectral efficiency through orthogonal subcarriers. The code typically implements key components including: - MIMO channel modeling using Rayleigh or Rician fading channels - OFDM modulation/demodulation with IFFT/FFT operations - Space-time coding schemes (e.g., Alamouti code) for transmit diversity - Maximum likelihood or MMSE detection algorithms for signal recovery By analyzing the BER-SNR relationship curve, engineers can evaluate system performance under various noise conditions, optimize parameters like modulation schemes (QPSK, 16-QAM etc.), and adjust system configurations for practical deployment scenarios. The simulation helps validate theoretical performance bounds and assess real-world implementation trade-offs.