Mobile Communication Anna University Question Papers

I am 4th semester of BE IT Program at Anna University. in this semester I have Mobile Communication subject. I am doing preparation for this subject but I have only books for it. So I want some question papers of Mobile Communication Subject of BE IT Program of Anna University. So please provide the question papers as soon as possible because the exams will start soon.

Hello sir, from Anna University I want Mobile Communication Question Papers for exam preparation. Is there any one can provide me here Mobile Communication Anna University Question Papers?

[pooja]

The anna University is provides Mobile Communication for to provide an overview of Wireless Communication networks area and its applications in communication engineering.

Question papers for Mobile Communication are appreciating the contribution of Wireless Communication networks to overall technological growth.

This courses is provides facility To understand the various terminology, principles, devices, schemes, concepts, algorithms and different methodologies used in Wireless Communication Networks.

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Mobile Communication Anna University Question Papers:

B.E./B.TECH (FULL TIME) DEGREE ARREAR EXAMINATIONS, MAY 2014
ELECTRONICS AND COMMUNICATION ENGINEERING
SEVENTH SEMESTER REGULATIONS: R-2004
E C 471- WIRELESS AND MOBILE COMMUNICATION
Time: 3 Hours Answer AL L Questions Max.Marks: 100
Part-A (10x2=20 Marks)

1. Prove that for a hexagonal geometry, the co-channel reuse ratio is given by Q = ^3N , where N = i 2 + ij +j 2 .

2. A cellular service provider decides to use a digital TDMA scheme which can tolerate a signal to interference ratio of 15dB in the worst case. Find the optimal value of N for 60 sectoring.

3. Define Coherence bandwidth and Coherence time.

4. Distinguish between flat and frequency selective fading.

5. What is the significance of cyclic prefix in OFDM system?

6. Differentiate spatial diversity and spatial multiplexing.

7. What are the advantages of diversity techniques?

8. Find the outage probability of QPSK modulation at Ps = 10 for a Rayleigh fading channel with Selection Combining diversity for M = 1 (no diversity), M = 2, and M = 3.
Assume branch SNRs = 10 dB, y2
= 15 dB, and y3
= 20 dB.

9. If GSM uses a frame structure where each frame consists of eight time slots, and each time slot contains 156.25 bits, and data is transmitted at 270.833 kbps in the channel, find the time duration of a frame and how long must a user occupying a single time slot wait between two successive transmissions.

10. What is the need for power control in CDMA based cellular systems