Compare Phase Modulation PM with Frequency Modulation FM-00227
This subjective question is related to the book/course
vu cs101 Introduction to Computing.
It can also be found in
vu cs101 Mid Term Solved Past Paper No. 4.
Question 1: Compare Phase Modulation (PM) with Frequency Modulation (FM)?
Answer:
Phase modulation (PM)
Simpler hardware requirements
Phase is modulated with the amplitude
Amplitude & Frequency of the carrier signal remain constant
Frequency Modulation (FM)
- Frequency of carrier signal is changed according to the amplitude of modulating signal
- Amplitude and Phase of the carrier signal remain constant
- Bandwidth of FM signal (modulated signal) = 10 * bandwidth of modulating signal Significant spectrum of FM audio = 15 KHz
- Minimum 150 KHz bandwidth
