这是一个基于空时分组编码的 MIMO_OFDM 通信系统的仿真设计。此系统包括 QPSK 调制解调， IFFT 调制，空时编解码，基于训练符号的信道估计等通信模块，包含这些模块的 m 文件。(This is a simulation design of a MIMO_OFDM communication system based on space-time block coding.This system includes QPSK modulation and demodulation, IFFT modulation, space-time codec, channel estimation based on training symbols and other communication modules, including the m files of these modules.)