Question Paper: Mobile Communication Question Paper - Dec 17 - Electronics And Telecomm (Semester 7) - Mumbai University (MU)
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Mobile Communication - Dec 17

Electronics And Telecomm (Semester 7)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question No. 1 is compulsory
(2) Attempt any three from remaining five questions
(3) Draw neat diagrams wherever necessary

1(a) How does OFDM provide high data rate?
(5 marks) 00

1(b) Microcell zone concept helps in improving capacity of a cellular system. Justify.
(5 marks) 874

1(c) What is software defined radio?
(5 marks) 00

1(d) Differentiate between Rayleigh and Rician distribution.
(5 marks) 00

2(a) While designing a cellular system, how are co-channel and adjacent channel interferences kept under control? What is the role of S/I ratio and Q in this?
(10 marks) 00

2(b) Draw neatly and explain the role played by various entities in the GSM architecture.
(10 marks) 887

3(a) Describe the frequency and channel specifications of forward channels in CDMA1.
(10 marks) 895

3(b) Explain the Handoff and power control in 3G systems.
(10 marks) 900

4(a) Give the main features of WCDMA and how are they different from CDMA 2000.
(10 marks) 895

4(b) Elaborate on the contribution of MIMO techniques in LTE.
(10 marks) 910

5(a) Discuss the frames and slots in LTE. What is a Resource Block?
(10 marks) 00

5(b) Classify small scale fading based on Multipath Time Delay Spread and Doppler Spread.
(10 marks) 913

Q6) Short notes on: (any two)

  • (a) Indoor propagaton models
  • (b) RAKE Receiver 885

  • (c) Trunking & GOS 1368

  • (d) GSM authentication & security

(10 X 2 = 20 marks) 886

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