Implementation of MIMO-OFDM System with 16QAM Modulation

Through my modifications, a MATLAB implementation has been developed to realize a 16-QAM based Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system. This implementation combines MIMO technology with OFDM modulation, achieving higher data transmission rates and improved interference resistance during signal transmission. The code includes key components such as 16QAM constellation mapping, OFDM modulation with IFFT operations, and MIMO spatial multiplexing algorithms. The accompanying figure illustrates the system architecture and performance metrics, clearly demonstrating the signal modulation scheme and transmission signal spectrum distribution. The system employs techniques like zero-forcing or MMSE equalization for MIMO signal detection and cyclic prefix insertion for OFDM robustness against multipath fading. Through this system implementation, we can effectively enhance wireless communication system performance and meet the requirements of various application scenarios.