| SATELLITE COMMUNICATION |
| PAPER NO. 2 |
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| PUT ON: mAY 2003 |
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EC-430 SATELLITE COMMUNICATION (B.Tech 8th Semester, 2122) Time : 3 Hours Maximum Marks : 60 NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from Section B and any two questions from Section C Section-A Marks : 20 1(a) What are various access techniques used for satellite communications? (b) Explain why OQPSK is preffered over QPSK for satellite commmunication. (c) What do you mean by channel throughput ? What is its significance? (d) Define and discuss reciever noise temperature. (e) Discuss the advantages and disadvantages of non-linear amplifier. (f) Where we prefer TDMA and why ? (g) Name the important application ares of satellite communication. (h) Explain the concept of frequency hopping? (i) Discuss the effect of orbital inclination. (j) Explain the desigh parameters used for uplink design. Section-B Marks:5 Each 2. Explain in Detail the FDMA technique used for multiple access. 3. Dicuss the various design issues to be addressed for the design of satellite downlinks. 4. How satellite helps in scientific students? Explain. 5. Discuss the various atmospheric effects on the performance of satellite links. 6. How dirtect to home TV braodcasting is achieved ? Explain. Section-C Marks : 10 Each 7. Discuss the applications of demand assignment multiple access techniques. 8. Explain the working principle of VSAT. Also explain the video reciever structure of earth station. 9. Write a short note on mobile satellite networks. |
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