Questions Search

This website covers previous years question papers of various universities and colleges in India. Moreover, the information on admission to various courses from various universities/institutes/colleges are also available. Research paper questions are also updated from time to time. Also the latest teaching faculty plus teachers jobs, Government jobs, Banking Jobs, and other jobs are regularly updated to help jobless candidates. Admit cards of various recruitment of Govt organisation are updated. Search your terms using the sejavascript:void(0)arch box provided.
Are you student / faculty of Vikram University Ujjain? We are collecting old question papers. If you have latest question papers 2016 / 2015 / 2014 years, then contact us through email [email protected] / [email protected] . We will give you money for your question papers you send to us.

TNPSC Group IV 2016 Model Questions AnswersTNPSC Group IV

Anna Univ B.E Civil Engineering Previous Years Question PapersBE Civil Anna Univ

Anna Univ B.E EEE Previous Years Question PapersB.E EEE Anna Univ Questions

Anna Univ B.E Mechanical Engineering Previous Years Question PapersMechanical B.E Questions

Anna Univ B.E CSE Previous Years Question PapersMechanical B.E Questions

Anna Univ B.E ECE Previous Years Question PapersMechanical B.E Questions

VTU Question PapersLatest News

Dharmsinh Desai University Previous Years Question PapersLatest News

NEW: Last 05+ Years Question Papers of CE6451 Fluid Mechanics and Machinery

NEW: ME6502 Heat and Mass Transfer AU Chennai Last 10 Set of Question Papers

NEW: CE2027 Housing Planning and Management 2014 Question Paper

Himachal Pradesh University (HPU) Previous Years Question Papers

ME2027 PPCE All Previous Years Question Papers [NEW]

GNDU Previous Years Question Papers [NEW]

Teachers TGT, PGT, PRT jobs in New Delhi Schools


Follow by Email

Friday, November 18, 2016

CS6304 Analog and Digital Communication Nov Dec 2016 Important Questions

Anna University Chennai - Collection of all important questions for Nov Dec 2016 CS6304 Analog and Digital Communication examinations.
03rd Semester / II Year
Computer Science Engineering
CS6304 Analog and Digital Communication
(Regulation 2013)
Nov Dec 2016 Important Questions

Important 16 Marks Questions (All five units) are listed for CS6304 Analog and Digital Communication subject

1. a. Can you recall the phasor diagram of wideband FM and explain about the bandwidth of FM signal (8)
b. How would you show the difference between phase modulation and frequency modulation.  (8)

2. A modulating signal of 2 cos5000t is amplitude modulated over a carrier signal of 5cos20000t
a. What approach would you use to find the modulation index, LSB and VSB frequencies (8)
b. How would you show your understanding of Bandwidth and the ratio of SideBand Power in the Total Power of AM wave (8)

3. a. The first stage of a two stage amplifier has a voltage gain of 10, a 600 Ω input resistor , a 1600 Ω equivalent noise resistance and a 27 kΩ output resistor . For the second stage these values are 25, 81kΩ , 10kΩ and 1 MΩ respectively. What is the equivalent input noise resistance of this two stage amplifier and also what is the noise figure of the amplifier if it is driven by a generator whose output impedance is 50 Ω.
b. How would you show the expression for instantaneous voltage of AM wave? (8)

4. a. How would you explain the nature of SSB spectrum if the modulating signal is m(t)= cos2𝜋.100t + cos2π.2000t and carrier is given by c(t) = cos2π.10000t. (8)
b. Can you recall the relationship between the instantaneous carrier frequency and modulating signal for FM. (8)

5. a. Can you distinguish between modulation index for FM and PM. (4)
b. What is the relationship between modulation index and modulating signal for FM and PM.  (12)

6. Can you formulate a theory for amplitude shift keying systems with neat diagram. (16)

7. How would you show your understanding of the operations of Non-coherent and coherent ASK modulators (16)

8. For a BPSK modulator with a Carrier frequency of 70 MHz and an input bit rate of 10 Mbps,
a.What can you say about the maximum and minimum upper and lower side frequencies, draw the output spectrum, (8)
b. How would you summarize the minimum Nyquist bandwidth, and calculate the baud rate (Assume f= 5MHz) (8)

9. Can you identify the bandwidth considerations of 8-PSK system. (16)

10. What approach would you use to explain the principle of
a. FSK transmitter (8)
b. FSK receiver. (8)

11. Estimate the VRC and LRC for the following ASCII encoded message “THE CAT”. Use odd parity for VRC and even parity for LRC (16)

12. a. Interpret the History of Data Communication. (8)
b.Illustrate the Data Communication codes. (8)

13. a.Describe in detail about the Standards Organizations for data communication. (8)
b. State the concept of Data Communication circuits using a basic block diagram. (8)

14. Write about the generation of PAM and it’s demodulation. (16)

15. a.Draw the block diagram of PCM transmitter and receiver and explain. (12)
b.What is ISI? How can it be reduced? (4)

16. Describe how Viterbi procedure is used for decoding convolution codes. (16)

17. Consider a discrete memoryless source with source alphabets S = S0, S1, S2 and their probabilities P0 = ¼, P1 = ¼ , P2 = ¼ . Generate the entropy of the source H(X) & H(X2). Also prove that the entropy of the extended source is equal to n times H(X) i.e., H(X^2) = 2*H(X).

18. Compare the Linear Block Codes and Binary Cyclic Codes in detail. (16)

19. a.Write the Huffman code for a discrete memory less source with probability statistics {0.1,0.1,0.2,0.2,0.4}. (8)
b. Describe the concept of Channel coding theorem.

20. Give main idea of Source Coding Theorem? Explain it with suitable examples.

21. Draw the architecture of GSM system and explain the function of each block. (16)

22. a. Report the channel assignment strategies. (8)
b. Show the concept of Handoff in cellular communication (8)

23. a . Explain the operation of CDMA multiplexing system. (10)
b. Identify the advantages of CDMA over TDMA multiple access schemes. (6)

24. Describe the concept of cellular topology and cell fundamentals with examples. (16)

25. a.Point out Direct Broadcast Satellite. (8)
b.List the functionality of Bluetooth. (8)

No comments:

Post a Comment

Pen down your valuable important comments below