中文说明：本程序对mimo-ofdm系统中的不同的信道估计算法进行对比，可以从仿真图中清晰的看到各方法的性能差异，适合初学者参考。
English Description：
This program compares different channel estimation algorithms in MIMO OFDM system, and the performance difference of each method can be clearly seen from the simulation diagram, which is suitable for beginners.