Punjab Technical University 2005 M.Tech Electronics and Communication Engineering ADVANCED COMMUNICATION SYSTEMS - Question Paper

PUNJAB tech. UNIVERSTIY

ADVANCED COMMUNICATION SYSTEMS EC 504 MAY 2K5
(M. Tech. first SEMESTER)

Time three hours Maximum Marks: 100

Note:. Attempt any 5 ques.. All ques. carry equal marks.

1. What is QPSK? Compare the PCM, DPCM and Delta Modulation.

2. Compare the WDM and TDM. define the Link Management Protocols.

3. Describe the characteristics of satellite design.

4. compare different multiple access techniques.

5. Discuss the constitution, working and applications of VSAT’s.

6. Discuss the GSM and GORS. 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.

Earning:   Approval pending.