中文说明：应用背景执行基带比特流的QPSK调制：并；（一）没有使用内置函数，并；（乙）使用内置函数。并；通过它AWGN信道和图信噪比与误码率的接收信号。关键技术渠道是仿照这样一种方式，考虑所有的基带区域的信道均衡块工作通带通带的通道和各个阶段的影响这样的上转换，下转换等通道的效果。
English Description：
Application background Perform base band QPSK modulation of a bit stream: (a) without using in-built function, (b) using in-built function. Pass it through an AWGN channel and plot SNR versus BER of the received signal. Key Technology The channel is modeled in such a way that the channel-equalization block works in the baseband region considering all resultant affects of channel and various stages of the passband tr