Deemed University 2010 B.Tech Electrical and Electronics Engineering University: Lingayas University Term: III Title of the : Digital and Analog Communication - Question Paper
Roll No. ..
Lingayas University, Faridabad
Examination May, 2010
Course: B.Tech. Year: IInd
Semester: III Paper Code: EE-217E
Subject: Digital and Analog Communication
[Time: 3 Hours] [Max. Marks: 100]
Before answering the question, candidate should ensure that they have been supplied the correct and complete question paper. No complaint in this regard, will be entertained after examination.
Note: Attempt any Five Questions.
Q-1 (a) Find the fourier transform of the following given wave form Fig. (1). (12)
Fig. (1)
(b) Obtain the fourier series for the waveform shown in the fig (2). (8)
Q-2. (a) Draw and explain the block diagram of communication system. (10)
(b) State and prove the following properties of Fourier transform. (10)
(i) Time shifting property
(ii) Frequency differentiation property.
Q-3. (a) Compare the advantages and disadvantages of AM and FM. (10)
(b) To transmit a bit sequence 10011011, draw the resulting waveforms using
(i) Unipolar RZ (ii) Unipolar NRZ (iii) Bipolar RZ
(iv) AMI RZ (v) Manchester (10)
Q-4. (a) Explain the PSTN network with the help of block diagram? (10)
(b) Explain with a neat diagram, the working and
electrical connections of
Rs-232 (10)
Q-5. (a) Explain the following protocol with the help of examples. (10)
(i) Stop & wait protocol
(ii) Sliding window protocol
(b) Explain with a neat diagram different types of transmission modes. Give one example each. (10)
Q-6. (a) Explain the difference between time division and frequency division multiplexing. (10)
(b) What is ADSL? Explain it. (10)
Q-7. (a) What are the different types of data encryption techniques? Which one is more efficient? (12)
(b) Construct the hamming code for the bit sequence 10011001. (8)
Q-8. Write short notes on any two of the following: (20)
(i) Data Compression
(ii) Cyclic Redundancy check (CRC)
(iii) Types of transmission media.
Roll No. ..
Lingayas University, Faridabad
Examination December, 2009
Course: B.Tech. Year: IInd
Semester: III Paper Code: EE-217E
Subject: Digital and Analog Communication
[Time: 3 Hours] [Max. Marks: 100]
Before answering the question, candidate should ensure that they have been supplied the correct and complete question paper. No complaint in this regard, will be entertained after examination.
Note: Attempt any Five Questions.
Q-1 (a) Find the fourier transform of the following given wave form Fig. (1). (12)
Fig. (1)
(b) Obtain the fourier series for the waveform shown in the fig (2). (8)
Q-2. (a) Draw and explain the block diagram of communication system. (10)
(b) State and prove the following properties of Fourier transform. (10)
(i) Time shifting property
(ii) Frequency differentiation property.
Q-3. (a) Compare the advantages and disadvantages of AM and FM. (10)
(b) To transmit a bit sequence 10011011, draw the resulting waveforms using
(i) Unipolar RZ (ii) Unipolar NRZ (iii) Bipolar RZ
(iv) AMI RZ (v) Manchester (10)
Q-4. (a) Explain the PSTN network with the help of block diagram? (10)
(b) Explain with a neat diagram, the working and
electrical connections of
Rs-232 (10)
Q-5. (a) Explain the following protocol with the help of examples. (10)
(i) Stop & wait protocol
(ii) Sliding window protocol
(b) Explain with a neat diagram different types of transmission modes. Give one example each. (10)
Q-6. (a) Explain the difference between time division and frequency division multiplexing. (10)
(b) What is ADSL? Explain it. (10)
Q-7. (a) What are the different types of data encryption techniques? Which one is more efficient? (12)
(b) Construct the hamming code for the bit sequence 10011001. (8)
Q-8. Write short notes on any two of the following: (20)
(i) Data Compression
(ii) Cyclic Redundancy check (CRC)
(iii) Types of transmission media.
| Earning: Approval pending. |
