Question

The expression for bandwidth BW of
a PCM system, where v is the
number of bits per sample and fm is
the modulating frequency, is given by
Select one:
a. BW> = Vfm
b. BW< = vfm
c. BW>= 1/2vfm
d. BW>= 2 vfm​

Answer 1

The correct answer is an option (a) BW> = Vfm.

What is bandwidth in PCM?

• The PCM signal waveform's bandwidth is bounded by BPCM=12(R)=12 (NFS) The bitrate is R, and as this is a square wave, the fundamental frequency equals the square wave's frequency (according to Fourier transform)

• PCM (pulse-code modulation) is a digital representation method for sampled analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony, and other digital audio applications.

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