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2003 Course Advanced Digital Signal Processing

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Total No. of Questions : 12] [Total No. of Pages : 3 [3764]-247 P1354 B.E. (Electronics) ADVANCED DIGITAL SIGNAL PROCESSING (2003 Course) (404205) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) Answer Q1 or Q2, Q3 or Q4, Q5 or Q6, from Section I and Q7 or Q8, Q9 or Q10, Q11 or Q12 from Section II. 2) Answers to the two sections should be written in separate answer books. 3) Neat diagrams must be drawn wherever necessary. 4) Use electronic pocket calculator is allowed. 5) Assume suitable data, if necessary. SECTION - I Q1) a) Q2) a) b) Obtain the spectral density, autocorrelation and signal energy when x(t) = A sinct. [8] Explain with proof how autocorrelation and energy spectral density form FT pair and also explain Rayleighs energy theorm. [8] OR Explain sampling rate conversion by a rational factor I/D. [6] Design a two stage decimator for the following specifications: D = 100 Passband : 0 F 50 Transitionband : 50 F 55 Input sampling rate : 10,000 Hz Ripple : S1 = 10 1, S2 = 10 3. [10] Q3) a) b) c) Explain basic LMS adaptive algorithm along with a flow chart. Explain practical limitations of the basic LMS algorithm. Explain the main components of adaptive filter. b) [7] [6] [3] OR Q4) a) Explain how adaptive filters are useful for the following applications:[10] i) ii) b) Adaptive Jammer suppression. Adaptive telephone echo cancellation. Explain RLS algorithm and compare its performance with LMS algorithm. [6] P.T.O.

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