Simulation Design of MIMO-OFDM Communication System with Space-Time Block Coding

This project presents a simulation design for a MIMO-OFDM communication system implementing Space-Time Block Coding (STBC). The system architecture incorporates key communication modules including QPSK modulation/demodulation with constellation mapping, IFFT/FFT transformations for OFDM signal processing, Alamouti-based space-time encoding/decoding algorithms, and pilot-assisted channel estimation techniques using training symbols. The simulation framework enables comprehensive system performance evaluation and parameter optimization to enhance communication quality and transmission rates. Through MATLAB-based implementation, researchers can effectively analyze MIMO-OFDM system operational principles and performance characteristics, including BER calculations and spectral efficiency measurements. The simulation results provide valuable guidance for subsequent practical system design and deployment, while serving as a verification platform for testing novel communication algorithms and technologies. The design employs matrix operations for MIMO processing and utilizes orthogonal pilot sequences for accurate channel state information acquisition. This STBC-based MIMO-OFDM simulation represents a crucial research tool for understanding and applying modern wireless communication technologies, with potential extensions supporting various modulation schemes and channel conditions.