User:K Deepthi

M.TECH - DECS FIRST MID EXAM 24 QUESTIONS  :-

I)	Digital System Design :-

1. a)Draw an ASM chart of JK flipflop .Realize it usin SR flipflop and required gates.   b)How does the ASM chat differ from a software flow chart?

2. a) Draw the general structure of a CPLD and explain how logic function can be realized on CPLD with simple example.   (b) Describe important features of FPGA

3. a)Explain how kohavi algorithm is useful in detection of faults in digital circuits.  (b) Write short notes on intermittent faults.

4. a)Describe the algorithmic steps involved in D- algorithm.   (b) Write short notes on random testing.

II) Advanced Digital Signal Processing :- 1.Explain in detail about (a) Inverse System                                          (b). System identification.

2. a) Explain the Chirp-Z transform algorithm.    b) Compare  FIR and IIR filter designs.

3. a) Develop a cascade lattice realization of an Nth order complex coefficient allpass transfer function  AN(Z).    (b) Explain in detail about state space structures and polyphase structures

4. Derive the algorithm and draw the N=8 flow graph for the DIT SRFFT algorithm.

III) Embedded Systems :- 1. a)Explain classification of embedded systems. (b)What are the design challenges in embedded system?

2. a)Explain features of UART.   (b) Differentiate GPP and DSP.

3 (a) Briefly mention the memory management and events in RTOs. (b) Explain the selecting an architecture saving memory space

4. a)With an example  explain Round robin  (b)  Discuss briefly debugging technique.

IV) Digital Communication Techniques :-

1.	  Explain how Rayliegh distribution is frequently used to model the statistics of signals transmitted through radio channel

2.	a) Explain about Representation of Digitally Modulated       b)Signals-Memory less Modulation Methods

3.	a) Explain the properties of Matched filter.      b) Write short note on optimum detector for an AWGN channel

4.	Derive the probability of error for envelope detection of M-array orthogonal signals.

V) Adaptive Signal Processing :-

1. a)write about the characteristics and applications of an Adaptive system.     b) Write about adaptive channel equalization.

2 . a)write about gradient search by the method of steepest descent.     b) Discuss clearly the parameter estimation for AR model using Yule-walker-method

3. a)Explain about significance of Weiner-HOPf equations in adaptive filter theory.    b) Explain the correlation method of power spectrum estimation and period gram estimator and compare them

4. Define Expectation in case of discrete random processes and hence explain clearly the importance of variance  and covariance in respect of two processes x(u) and y(u).

VI) Low Power VLSI :-

1. (a) What are the main advantages of BICMOS technology? b)Mention the classification of BICMOS technology and explain about any one.

2. (a)Explain in detail the Threshold voltage limitations (VT) of low power designs. b) Discuss about the limitations of DSM technology.

3. Explain Briefly  about (a). SOICMOS (b). Lateral BJT on SOI.

4. Explain clearly comparison of CMOS, Bipolar and BICMOS technologies in terms of speed and power