对有3条固定路径的AWGN多径信道中的QPSK系统进行BER性能仿真，并与在理想的AWGN信道（没有多径）中同样系统地BER性能进行比较-to have three fixed path over the AWGN Channel QPSK BER performance system simulation, and with the ideal AWGN channel (multi-path) to the same system BER performance comparison

OFDM系统的不同编码如BPSK，QPSK，mQAM等在瑞利信道或高斯信道中传播的特性曲线分析。-The different coding of OFDM system in Rayleigh channel, or Gaussian channel spread features such as BPSK, QPSK, mQAM curve analysis.

要求对有3条固定路径的AWGN多径信道中的QPSK系统进行BER性能仿真，并与在理想的AWGN信道中同样系统的BER性能进行比较。熟悉瑞利平坦衰落、莱斯平坦衰落与频率选择性衰落的特点，比较这些衰落信道的误码率。-Required to have three fixed-path AWGN multipath channels of QPSK system BER performance simulation, and in an ideal AWGN channel with the same

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。-This is a space-time block coding MIMO_OFDM communication system simulation-based design, this system include QPSK modulation and demodulation, the IFFT modulation, space-ti

基于QPSK调制方式实现2发1收的空时分组编码系统(A space time block coding system with 2 outputs and 1 outputs is achieved based on QPSK modulation mode.)