Wireless Networking | BSc.CSIT (TU) Question Paper 2067 | Fifth Semester

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Wireless Networking Fifth Semester | Third Year | Tribhuvan University
Old Question Collection | Question Bank
Wireless Networking, Year: 2067
Computer Science and Information Technology (CSc. 308)
Full Marks: 60 | Pass Marks: 24 | Time: 3 hours

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[File Type: PDF | File Size: 408 KB | Download]

Candidates are required to give their answer in their own words as far as practicable.
The figures in the margin indicate full marks.

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  1. Define wireless communication. Compare first and second generation cellular system.[1+5]
  2. A GSM system operating at 900 MHz needs a receiver sensitivity of 50 dBm at a distance of 500m from the transmitter. Transmitting antenna gain and receiving antenna gain are 10dB and 8dB respectively. At what power level the signal should be transmitted to satisfy the above condition? Use free space path loss model.[6]
  3. Define modulation. Explain minimum shift keying (MSK) modulation technique.[1+5]
  4. Why diversity is used in wireless communication? Explain different diversity mechanism.[1+5]
  5. Define co-channel cell. Find the distance between the nearest co-channel cell in hexagonal topology with necessary diagram.[1+5]
  6. Define adjacent channel interference. Explain how adjacent channel interference can be reduced.[2+4]
  7. Explain frequency division multiple access technique.[6]
  8. Define handoff. Explain briefly about different handoff strategies.[2+4]
  9. Write briefly on operation of mobile IP.[6]
  10. Write short notes on (any two)
    a) Near-far effect
    b) OFDM
    c) Aloha
    d) Mobile TCP hierarchy
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