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Compare amplitude and frequency modulation in term of i) Bandwidth ii) Signal Quality iii) Effect of noise on signal iv) Range

written 6.9 years ago by teamques10 ★ 70k

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Mumbai University > Electronics > Sem 4 > Priniciples of Communication Engineering

principles of communication network

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written 6.9 years ago by teamques10 ★ 70k

Parameter	Amplitude Modulation	Frequency Modulation
(i) Bandwidth	Twice the sum of modulating signal frequency (2fm)	Twice the sum of modulating signal frequency and the frequency deviation.
(ii) Signal Quality	AM has poorer sound quality compared to FM, but is cheaper and can be transmitted over long distances.	FM has better sound quality due to higher bandwidth.
(iii) Effect of noise on signal	AM is more susceptible to noise because noise affects amplitude, which is where information is “stored” in an AM signal.	FM is less susceptible to noise because information in an FM signal is transmitted through varying the frequency, and not the amplitude.
(iv) Range	AM audio ranges from 535 to 1705 KHz	FM audio ranges in a higher spectrum from 88 to 108 MHz

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