Types There are two types of pulse amplitude modulation: In single polarity PAM, a suitable fixed DC bias is added to the signal to ensure that all the pulses are positive. In double polarity PAM, the pulses are both positive and negative.
Types There are two types of pulse amplitude modulation In single polarity PAM, a suitable fixed DC bias is added to the signal to ensure that all the pulses are positive. In double polarity PAM, the pulses are both positive and negative.