发送信号经过QPSK调制，经过信道，得到接收信号，并画出了各个阶段的图-Transmission signal after the QPSK modulation, through the channel, the received signal, and draw the various stages of Figure

QPSK调制后产生QPSK信号，QPSK信号分别通过AWGN信道、Rayleigh衰减信道和Rician衰减信道，分别通过QPSK解调出数字信号，通过输入与输出数字信号的对比计算出仿真过程中的传输误比率，并将其与各衰减信道的理论误比率进行对比-Generate QPSK signal QPSK modulation, QPSK signals through AWGN channel, Rayleigh fading channel and Rician fading channel, resp

信号处理设计，包括下变频，抽取滤波，同步，均衡等模块，对加扰QPSK信号进行解调设计。-Signal processing design, including down-conversion, decimation filtering, synchronization, equalization module, scrambled QPSK signal is demodulated design.

考虑载波的qpsk信号在瑞利信道上的仿真 可以下载学习-Considering on the QPSK signal of the carrier in Rayleigh channel simulation can download the study