各种模拟调制和数字调制的波形和频谱图，对初学者很有帮助-A variety of analog modulation and digital modulation waveform and frequency spectrum

BFSK 调制解调 完整 代码 产生一个随机序列，用不同调制方式，它们的频谱图，和误码率。-BFSK demodulation complete code produce a random sequence, with different modulation mode, their spectrum diagram, and the bit error rate.

QAM,PSK,DPSK,FSK,MSK调制仿真，包括眼图输出，误码率输出，星座图，频谱，及实际wav文件的调制解调-QAM, PSK, DPSK, FSK, MSK modulation simulation, including eye diagram output, the output BER, constellation, spectrum, and actual modem wav files