主要讨论了在频率选择性衰落信道下基于子载波的MIMO-OFDM系统如何获得发射分集增益和接收分集增益,从而改善系统的整体性能。通过仿真,基于发射分集技术和接收分集技术能够明显地提高MIMO-OFDM系统的性能。
In this paper we mainly analyze how to improve the system performance in the frequency-selective fading channels by obtaining the diversity of transmitter and receiver based on sub- carrier MIMO - OFDM system. Computer simulations also show that the technique based on transmit and receive diversity can improve the performance of MIMO-OFDM systems obviously.