For both PPM and PDM _______ is kept constant.(a) Amplitude(b) Time period(c) Frequency(d) Number of levelsThe question was asked by my college professor while I was bunking the class.This intriguing question comes from Baseband Transmission-2 in portion Formatting and Baseband Modulation of Digital Communications

For both PPM and PDM _______ is kept constant.(a) Amplitude(b) Time pe

1.	For both PPM and PDM _______ is kept constant.(a) Amplitude(b) Time period(c) Frequency(d) Number of levelsThe question was asked by my college professor while I was bunking the class.This intriguing question comes from Baseband Transmission-2 in portion Formatting and Baseband Modulation of Digital Communications
Answer» Right choice is (a) Amplitude To explain I would SAY: In PPM waveform DELAYING or advancing of PULSE is done. In PDM the pulse WIDTH is varied. Thus in both the cases amplitude is maintained constant.

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