Classical MIMO-OFDM Simulation (MATLAB)

Complete classical MIMO-OFDM simulation (MATLAB) includes the following modules: - create_channel.m: Creates wireless channel models with configurable parameters such as path loss, fading characteristics, and delay profiles for realistic signal propagation simulation - BitLoad.m: Implements bit loading algorithms to optimize data distribution across subcarriers based on channel conditions, maximizing spectral efficiency - ComputeSNR.m: Calculates Signal-to-Noise Ratio metrics for performance analysis, typically implementing both theoretical and empirical SNR computation methods - chow_algo.m: Executes Chow's algorithm for power allocation and bit loading optimization, featuring adaptive modulation schemes for different channel quality scenarios - EnergyTableInit.m: Initializes energy tables for power distribution management across multiple antennas and subcarriers, setting up reference power levels - campello_algo.m: Implements Campello's algorithm for discrete bit loading and power allocation, providing near-optimal solutions for integer bit constraints - ResolvetheLastBit.m: Resolves the last bit allocation issue in discrete bit loading algorithms, handling edge cases in subcarrier bit distribution - modulate.m: Performs signal modulation using various digital modulation schemes (QPSK, QAM, etc.) with configurable constellation mapping - precode.m: Implements precoding techniques for MIMO systems, including linear precoders like Zero-Forcing and MMSE for interference mitigation - ifft_cp_tx_blk.m: Handles transmitter block processing with Inverse Fast Fourier Transform and Cyclic Prefix addition, converting frequency-domain signals to time-domain waveforms - channel.m: Processes channel effects including multipath fading, AWGN addition, and MIMO channel matrix operations for realistic transmission simulation - fft_cp_rx_blk.m: Manages receiver block processing with Fast Fourier Transform and Cyclic Prefix removal, converting time-domain signals back to frequency-domain for demodulation - shape.m: Performs signal shaping and filtering operations, typically implementing pulse shaping filters like raised-cosine for spectral control