1 (a)
Explain Shanon Hartley Theorem.
5 M
1 (b)
Discuss the significance of Eye Pattern.
5 M
1 (c)
Explain Viterbi Algorithm.
5 M
1 (d)
Compare ISI and ICI.
5 M
2 (a)
State and prove Sampling Theorem for low pass signal.
10 M
2 (b)
Derive an expression for entropy.
A Gaussian channel has 2MHz bandwidth. Calculate the channel capacity if the signal power to noise spectral density ratio is 105 Hz. Also find the maximum information rate.
A Gaussian channel has 2MHz bandwidth. Calculate the channel capacity if the signal power to noise spectral density ratio is 105 Hz. Also find the maximum information rate.
10 M
3 (a)
Why line codes are required for digital communication? Draw the following line code formats for the given data format 01101001.
(i) Polar RZ.
(ii) RZ-AMI
(iii) Unipolar NRZ
(iv) Differential Manchester.
(i) Polar RZ.
(ii) RZ-AMI
(iii) Unipolar NRZ
(iv) Differential Manchester.
10 M
3 (b)
Draw the block diagram of QASK transmitter and receiver and explain its functioning.
10 M
4 (a)
Compare the following:
(i) BPSK and DPSK.
(ii) Systematic and Non systematic codes.
(i) BPSK and DPSK.
(ii) Systematic and Non systematic codes.
10 M
4 (b)
Derive an expression for probability of error of a matched filter.
10 M
5 (a)
Explain syndrome decoding for Cyclic Codes.
10 M
5 (b)
Draw the encoder for a (7,4) cyclic Hamming code generated by the generator polynomial G(D) = 1 + D + D3.
10 M
6 (a)
Draw the block diagram of M Ary FSK transmitter and receiver and explain the working.
10 M
6 (b)
An error control code has the following parity check matrix.
(i) Determine the generator matrix G.
(ii) Find the code words that begin with 101.
(iii) Decode the receive code word 110110.
10 M
Write short notes on:
7 (a)
Equalization.
7 M
7 (b)
Bit Synchroniser.
7 M
7 (c)
CRC codes.
7 M
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