Jawaharlal Nehru Technological University Hyderabad 2007 M.Tech Electronics and Communication Engineering TRANSFORM TECHNIQUES - exam paper

ans any 5 ques.
All ques. carry equal marks
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1.a) discuss the principle of representing unknown signals by known set of signals and hence explain the advantages of orthogonal set of functions for signal analysis.
b) Compare trigonometric and exponential Fourier series for signal approximation.
2.a) describe Fourier transform pair and describe condition for its existance and hence discuss the frequency analysis of signals and system with the help of Fourier transform.
b) describe Hilbert Transform pair and provide its importance in signal analysis.
3.a) What basic difference ranging from signal dimensional and 2 dimensional Transforms and compare them.
b) explain clearly two – D representation of Fourier transform and explain the energy and power density functions in two – D.
4.a) elaborate the advantages and disadvantages of Discrete cosine transform over Fourier transform in – two – D applications? explain clearly the properties of 2D – DeT.
b) What is K – L Transform? provide basic principles of LK transform and explain the properties.
5.a) What is wavelet? explain clearly the features of wavelet transform and hence distinguish ranging from continuous and discrete wavelet transforms.
b) describe MRA, scaling function and discuss clearly the concept of basis for wavelet subspace using Haar Wavelet.
6. What do you understand by the term short time Fourier Transform and compare it with continuous wavelet transform.
7.a) describe orthogonal wavelets and bring out their relation to Filter banks.
b) explain the implementation of Decomposition Filters and hence bring out concept of PRQMF.
8.a) What do you under stand by biorthogonal Filters and explain the implementation of B – Spline filter.
b) explain clearly

Earning:   Approval pending.