Communication

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GATE-2012 ECE Q15 (communication)

by Krishna Sankar on January 25, 2013

entropy_versus_probability

Question 15 on communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q15. A source alphabet consists of N symbols with the probability of the first two symbols being the [...]

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GATE-2012 ECE Q2 (communication)

by Krishna Sankar on December 15, 2012

power_spectral_density

Question 52 on communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q2. The power spectral density of a real process for positive frequencies is shown below. The values of  and , [...]

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GATE-2012 ECE Q39 (communication)

by Krishna Sankar on November 17, 2012

message_square_wave

Question 39 on communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q39. The signal  as shown is applied both to  a phase modulator (with  as the phase constant) and a [...]

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GATE-2012 ECE Q38 (communication)

by Krishna Sankar on November 3, 2012

Question 38 on Communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q38. A binary symmetric channel (BSC) has a transition probability of 1/8. If the binary transmit symbol X [...]

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GATE-2012 ECE Q3 (communication)

by Krishna Sankar on November 1, 2012

plot_frequency_domain_raised_cosine_pulse

Question 3 on Communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q3. In a baseband communications link, frequencies upto 3500Hz are used for signalling. Using a raised cosine pulse [...]

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