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23
votes
1
answer
92k
views
1
answer
Describe losses in optical fiber. OR List the different losses occur in optical fiber. Describe any one loss with diagram.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
11
votes
1
answer
68k
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1
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What is Hand-off ? List different types of hand-off. Explain any two in detail.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
9
votes
1
answer
53k
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1
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Draw and explain the block diagram of fiber optic communication system. List its advantages and disadvantages.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
9
votes
1
answer
50k
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1
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A glass clad fiber is made with core glass of refractive index 1.5 and the cladding is dopped to give fractional index difference of 0.0005.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
5
votes
1
answer
45k
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1
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Explain concept of cell splitting with neat diagram. Show that if cell radius is reduced by factor of 1/2 then traffic load increases by factor of 4. Assume shape of cell is circular.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
1
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2
answers
37k
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2
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Frequency Reuse and cluster formation
advanced communication system updated 2.1 years ago by pedsangini276 • 4.7k
4
votes
1
answer
30k
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1
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Draw and explain the working of two cavity klystron amplifier.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
2
votes
1
answer
29k
views
1
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Define the terms w.r.t wave guide: a) group velocity b) phase velocity c) Cut-off frequency d) Guided wavelength of waveguide e) Cut off wavelength
advanced communication system updated 4.1 years ago by sanketshingote • 100
1
vote
1
answer
28k
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1
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A step index fiber has a numerical aperture of 0.16, a core refractive index of 1.45 and core diameter of 90 mm, calculate (i) The acceptance angle . (ii) the refractive index of cladding.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
5
votes
1
answer
23k
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1
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Draw block diagram of satellite subsystem and describe function of each sections.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
2
votes
1
answer
19k
views
1
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Draw block diagram of basic cellular system. State advantages of cellular system.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
4
votes
1
answer
18k
views
1
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When the optical power launched into an 8km length of fiber is 120 microwatt the mean optical power at the fiber output is 3 microwatt. Determine
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
1
vote
1
answer
17k
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1
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Describe working and principle of avalanche photodiode with neat sketch. OR Draw the construction of avalanche photodiode. State its working principle.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
1
vote
1
answer
16k
views
1
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Compare rectangular waveguide and circular on the basis of : (i) Definition (ii) Construction (iii) Application (iv) Field pattern
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
0
votes
1
answer
15k
views
1
answer
State and explain the characteristics of optical fibers.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
1
vote
1
answer
14k
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1
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Explain GSM radio subsystem and list any four GSM air interface specifications.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
1
vote
1
answer
14k
views
1
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Illustrate the process of call initiation from landline telephone to cellular phone with neat timing diagram.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
1
vote
1
answer
14k
views
1
answer
Draw block diagram of OTDR and explain its working.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
6
votes
1
answer
14k
views
1
answer
Co channel Interference
advanced communication system updated 2.1 years ago by pedsangini276 • 4.7k
2
votes
1
answer
13k
views
1
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Describe call processing in GSM system with suitable diagram. OR Describe various stages of call processing in GSM system with the help of neat diagram.
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
0
votes
1
answer
12k
views
1
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Describe rectangular waveguide in TE and TM mode.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
1
vote
1
answer
10k
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1
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Differentiate between waveguide and two wire transmission line.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
2
votes
1
answer
10k
views
1
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State the advantages of circular waveguide and list its applications.
advanced communication system updated 4.1 years ago by teamques10 ★ 64k
0
votes
1
answer
10.0k
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1
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Define the following terms with the help of diagram : (i) Cell (ii) Cluster
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
2
votes
1
answer
9.9k
views
1
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Define the term adjacent channel interference. State methods to reduce it?
advanced communication system updated 2.4 years ago by teamques10 ★ 64k
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