MATLAB Implementation of Alamouti Space-Time Block Code for MIMO Systems

This MATLAB program implements the Alamouti Space-Time Block Code for MIMO (Multiple-Input Multiple-Output) systems. The code demonstrates how Alamouti coding technique enhances transmission efficiency and reliability in wireless communication systems by utilizing multiple antennas for both data transmission and reception. The implementation includes complete encoding and decoding processes using space-time block codes, featuring transmitter diversity with two transmit antennas and receiver diversity with multiple receive antennas. The program structure includes: - Signal modulation using digital modulation schemes (BPSK/QPSK) - Alamouti encoding matrix implementation for two transmit antennas - Channel modeling with Rayleigh fading effects - Maximum likelihood decoding algorithm for signal recovery - Performance evaluation through bit error rate (BER) calculations Key MATLAB functions utilized: - Modulation/demodulation functions for signal processing - Matrix operations for space-time coding implementation - Random number generation for channel modeling - Statistical analysis for performance metrics calculation This implementation serves as an educational tool for understanding MIMO principles and Alamouti coding techniques, providing a foundation for further research and experimentation in wireless communication systems. The code includes adjustable parameters for different antenna configurations and channel conditions, allowing users to test various scenarios and analyze system performance under different constraints.