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Roll No…….
Total No. of
Questions: 08
M.
Tech. (ECE) (Sem.-1st)
ADVANCED
COMMUNICATION SYSTEMS
Subject
Code: EC-504
Paper
ID: [E0564]
Time: 3 Hrs. Max.
Marks: 100
Instruction to Candidates:
1. Attempt
any FIVE questions out of EIGHT questions.
2. Each
question carry TWENTY marks.
1.
Describe delta modulation. What are its limitations?
How can these be removed?
3.
(a) Calculate the bit rate of one SONET
frame. Discuss SONET multiplexing hierarchy.
(b)
Describe the architecture of Optical transport network.
4.
(a) Derive the expression for Erlang’s
call congestion relation.
(b)
Explain SPADE system.
5.
(a) Determine system noise temperature
for a receiver.
(b)
Describe the downlink design for a large earth station satellite system giving the various system
considerations.
6.
Describe analog frequency modulation and
demodulation. Compare FM with AM for bandwidth and power comparison.
7.
(a) Describe need for use of line
formats in a digital link. Discuss any line format.
(b)
Discuss the link management protocols for a WDM link.
8.
Write a note on:
(a) Detection
of CDMA coded signals
(b) SDH
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