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ADVANCED COMMUNICATION SYSTEMS EC 504 MAY 2K5
(M. Tech. 1ST SEMESTER)
Time 3 hours Maximum Marks: 100
Note:. Attempt any Five questions. All questions carry equal marks.
1. What is QPSK? Compare the PCM, DPCM and Delta Modulation.
2. Compare the WDM and TDM. Describe the Link Management Protocols.
3. Describe the characteristics of satellite design.
4. compare various multiple access techniques.
5. Discuss the constitution, working and applications of VSAT’s.
6. Discuss the GSM and GPRS. How does cellular telephony operate?
7. Explain the CDMA architecture and its applications. How is QOS compared with
GSM?
8. Write notes on the following:
(a) SONET
(b) SOH
(c) 3G Systems
(d) Noise temperature.