Annamalai University MODERN DIGITAL COMMUNICATION TECHNIQUES November/December 2010 Question paper

University: Annamalai  University
Course: MODERN DIGITAL COMMUNICATION TECHNIQUES
Subject : MODERN DIGITAL COMMUNICATION TECHNIQUES
Year of  Question Paper : 2010

Reg. No. ________                                                                                                                                                      

Karunya University

(Karunya Institute of Technology and Sciences)

(Declared as Deemed to be University under Sec.3 of the UGC Act, 1956)

End Semester Examination – November/December 2010

Subject Title: MODERN DIGITAL COMMUNICATION TECHNIQUES 
Time: 3 hours

Subject Code:09CS317                                                                                             
Maximum Marks: 100           

                                                                                                                                                                                                                                               

Answer ALL questions (5 x 20 = 100 Marks)

1.    Compulsory:

            Briefly explain the direct sequence spread spectrum coherent binary Phase keying.

2.         Discuss the features of in phase and quadrature modulation and demodulation process.

(OR)

3.         Explain the optimum partially coherent receivers based on M ary PSK signal.

4.         Discuss in detail all the features of equalization techniques.

(OR)

5.         Explain the concepts of continuous phase modulation.

6.         Write short notes on

            a.         Orthogonal binary block codes.                      b.         Biorthogonal binary block codes.

            c.         Transorthogonal binary block codes. 

(OR)

7.         Discuss the features of linear block codes.

8.         Explain the maximum likelihood decoding of convolutional codes.

(OR)

9.         Explain in detail about threshold decoding..