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Practice over 1000+ GATE-level questions from this topic!

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Q#1 Digital Communication GATE EC 1992 MSQ +2 marks -0 marks

(a) A low pass signal x(t) has a spectrum given by

 , for .

                     0  , elsewhere

 

Assuming that the x(t) is ideally sampled at a sampling frequency of 3 kHz sketch.

(i) X(f), and

(ii) the spectrum of the sampled signal for .


(b) An Analog low pass signal of 4 kHz bandwidth is sampled at the Nyquist rate, subsequently quantized and encoded into a binary PCM wave with 128 quantization levels. The word synchronization is effected by adding a synchronizing pulse at the end of each code word. Determine the bit ratio to the resulting PCM signal.

Untitled-9.png

The spectrum of the sampled signal for

Bit ratio to the resulting PCM signal.

The spectrum of the sampled signal for

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Browse Practice Questions by Chapters / Topics in Browse Practice Questions by Chapters / Topics in GATE Electronics and Communications
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Topic Questions Attempted Correct
Network Analysis 273 0 0
Electronic Devices 224 0 0
Analog Electronics 395 0 0
Digital Electronics 352 0 0
Signals and Systems 263 0 0
Control Systems 264 0 0
Communication System 340 0 0
EMFT - ECE 273 0 0
Engineering Mathematics 280 0 0
General Aptitude 240 0 0
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