a. VVhat are pseudo random binary signals? (4)
b. Determine the transfer function of the system from the given magnitude plot. (5)

٦ 40 db/decade

- 20 db/decade
7

PART B

a. What is the guiding principle behind parameter estimation methods? (2)
b. Explain how the prediction errors can be minimized? (7)

a. Explain linear regression and least square method, (5)

b. Give the properties of least square estimates. (4)

a. Explain Instrumental Variable method and obtain an unbiased and consistent (4)
estimate of 8 by this method.

0. Explain the Recursive prediction error method. (5)
PART C
a. Explain choice of sampling interval and pre-sampling filters.

b. Explain direct method of optimal input design. (6)

a. The choice between the system identificadon approaches and choices of design (8)
variables within the approach are guided by a number of issues. Discuss any four issues.

b. What do you mean by persistence of excitation? (4)
a. What do you mean by optimal norm? Explain.

b. Obtain the optimal choice of instruments and choice of prefilter. (6)