脉波振幅调变 modulation PAM

交织编码脉波振幅调变 trellis coded pulse amplitude modulation

脉冲调幅载波 pulsed amplitude-modulated carrier

量化脉波振幅调变 quantized pulsed amplitude modulation

脉冲波幅调变 modulation pulse-amplitude

脉波振幅调变讯号 signal PAM