中文说明：16qam调制解调，基带经成形滤波器滤波后，再进行调制，首先产生二进制信号序列，并且傅里叶变换，求出已调信号的频谱及画出16QAM调制方式对应的星座图，最后对对已调信号进行解调，统计误码率，程序全面、实用。
English Description：
In 16QAM modulation and demodulation, the baseband is filtered by the shaping filter, and then modulated. Firstly, the binary signal sequence is generated, and the Fourier transform is used to calculate the spectrum of the modulated signal and draw the constellation diagram corresponding to the 16QAM modulation mode. Finally, the modulated signal is demodulated, and the bit error rate is counted. The program is comprehensive and practical.