Mobile Communication Question Paper - May 2016 - Electronics and Telecom Engineering (Semester 7)

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Mobile Communication - May 2016

MU Electronics and Telecom Engineering (Semester 7)

Total marks: 80
Total time: 3 Hours 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) What is the role of GPRS in enhancing 2G GSM systems.

5 marks 888

1(b) Explain factors affecting small scale fading.

5 marks 913

1(c) Elaborate the concept of IMT 2000 family.

5 marks 899

1(d) Differentiate between WCDMA & CDMA 2000.

5 marks 901

2(a) Describe the difference between service data units & protocol data units. How is mapping from one to other is done.

5 marks

2(b) Explain IS-95 forward & reverse channel structure in detail.

5 marks 897 904

3(a) Explain GSM architecture & elaborate function of each block.

5 marks 887

3(b) Draw the block diagram of LTE transmitter & Receiver. Explain them in detail.

5 marks 908

4(a) Consider geographical area of a cellular system is 480sqkm. A total of 910 radio channels are available for traffic handling suppose, area of a cell is 8sq km.
(1) How many times would the cluster size of 7 have to be replicated in order to cover the entire service area? Calculate the number of channels per cell and system capacity.
(2) If the cluster size is decreased from 7 to 4 then does it result into increase in system capacity.

5 marks

4(b) Explain power control mechanism in 3G.

5 marks 900

5(a) Compare & contrast FDMA, TDMA, SDMA, OFDM, SSMA.

5 marks

5(b) Explain concept of MIMO w.r.t. 4G technology.

5 marks 910

Write notes on (any two)

6(a) EDGE architecture

5 marks 893

6(b) Call procedures in GSM

5 marks 890

6(c) Software defined radio.

5 marks

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