Download GTU BE/B.Tech 2018 Winter 6th Sem Old 161704 Analog And Digital Communication Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (OLD) EXAMINATION — WINTER 2018

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Subject Code:161704
Subject Name: Analog And Digital Communication
Date: 27/11/2018
Time: 02:30 PM TO 05:00 PM
Total Marks: 70

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Explain Amplitude Modulation in detail. 07

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(b) Explain Frequency Modulation in detail. 07

Q.2 (a) Explain OSI Model. 07
(b) Explain data topologies in detail. 07
OR
(a) Explain block diagram of communication system. 07

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(b) Explain Pulse modulation and its types in detail. 07

Q.3 (a) Explain token passing method used in IEEE 802.5 07
OR
(b) Explain principle and construction of fibre optic cable. 07

Q.4 (a) Explain SONET. 07

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(b) Explain CSMA/CA protocol used for wireless LAN. 07
OR
(a) Explain PSK and FSK. 07

Q.5 (a) Explain R232C communication standard. 07
(b) Explain error detection codes in detail with example. 07

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OR
(a) Explain Hamming code. 07
(b) Explain different type of noise. 07
OR
(a) Derive the modulation index for AM. 07

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(b) Explain Satellite communications. 07