EC2301 MJ2014 Digital Communication 5th Semester Question Papers - Reg2008

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Anna University
Question Paper Code 51403 
B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014.
Fifth Semester.
Electronics and Communication Engineering
EC 2301/EC 51 DIGITAL COMMUNICATION
(Regulation 2008)
(Common to PTEC 2301 – Digital Communication for B.E. (Part-Time) Fourth Semester Electronics and Communication Engineering Regulation 2009)



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PART A — (10 x 2 = 20 marks)

1. Classify communication channels.
2. State the demerit of digital communication.
3. What is the need for non uniform quantization?
4. . List any four speech encoding procedures.
5. Define hamming distance and hamming weight.
6. What are the requirements of a line code?
7. What is ISI?
8. What is a matched filter?
9. What are the advantages of QPSK over PSK?
10. Draw the signal space diagram for QAM signal for M = 8.

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