MU Electronics Engineering (Semester 8)
Mobile Communication
May 2013
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1(a) Explain the various nonlinear effect in FDMA
5 M
1(b) Explain fast associated and slow associated control channels in GSM
5 M
1(c) What is umbrella cell approaches?
5 M
1(d) Explain variable data rate transmission in CDMA
10 M

2(a) Discuss IMT 2000 system
10 M
2(b) With neat diagram, explain reverse CDMA channel
10 M

3(a) Draw and explain GPRS architecture
10 M
3(b) Explain with neat diagram mobility management in CDPD
10 M

4(a) Explian signal processing in GSM. What is the use of interleaver?
10 M
4(b) Explain handoff and power control in 3G system
10 M

5(a) Discuss forward W-CDMA channel
10 M
5(b) Compare SDMA, TDMA, FDMA and CDMA
10 M

6(a) Derive relationship between S/I (signal to interference ratio) and cluster size N
10 M
6(b) For the two-ray ground reflection model, derive the expression for received power at a distance 'd' from the transmitter
10 M

Write short notes on(any two):-
7(a) Sectoring in GSM
10 M
7(b) Knife edge diffraction model
10 M
7(c) Effect of Doppler spread on fast fading and slow fading
10 M



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