PTU M.Tech Paper 2012 Information Theory & Coding Punjab Technical University Exam 2012 Information Theory & Coding Test September and March Question Paper Free Download Punjab Technical University Information Theory & Coding Question Papers 2012 PTU M.Tech Question Paper 2012 for all students Previous Year old Past Papers of PTU M.Tech Paper 2012 Information Theory & Coding Punjab Technical University September 2012 and March 2012 Exam M.Tech Sample Model Question Papers Free Download PDF

** Information Theory & Coding**

Qi) Consider five messages given by the probabilities

(a) Calculate the average information H.

(b) Use the Shannon-Fano algorithm to develop an efficient code, and for that code, calculate the average no. of bits/ message. Compare with H.

Q2) (a) Explain Base bend and Band pass sampling theorems.

(b) Explain how the signals can be reconstructed from samples.

Q3) Explain the principle of delta modulation using a suitable block diagram. The input to a Delta modulator is m(+) = kt. Prove, by graphically determining approximate iii(t), that slop overload occurs when k exceeds a specified value. What is this value in terms of step size S and the sampling frequency fs.

Q4) (a) Explain the role of prediction and adaptive filters in waveform coding techniques.

(b) Explain Delta modulation with suitable block diagram.

QS) Derive an expression to calculate the probability of error in case of QPSK. Compare QPSK with MSK.

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PTU M.Tech Paper 2012 Information Theory & Coding