By studying the basic principles of the multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system, the corresponding systems of two transmitters and one receiver and two transmitters and two receivers are designed. The digital modulation method adopts multi-level phase shift keying modulation, the space-time coding adopts the Alamouti scheme, and the channel coding adopts RS coding. The system is simulated using Marlab software, and the error performance of the system is analyzed. The simulation results show that the scheme is designed correctly, and the system not only has high spectrum utilization and good error performance, but also has high application value.
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