一个16QAM数字调制电路，包括时钟生成电路，m伪随机序列生成电路，串并转换电路，电平映射电路、载波信号发生电路、ASK幅度调制电路及加法器(A 16QAM digital modulation circuit, including clock generation circuit, m pseudo-random sequence generation circuit, serial parallel conversion circuit, level mapping circuit, car