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Aim/Principle/Apparatus Required/procedure Tabulation/Circuit/ Program/Drawing Calculation & Results Viva-Voce Record Total 25 30 25 10 10 100

This document outlines an end semester practical examination for a Communication Systems Laboratory course. It lists 19 questions, with each question having two parts - (a) requires performing an experiment related to communication systems concepts and (b) writing a MATLAB program related to digital modulation techniques. Students must answer any one of the 19 questions. The questions cover topics like analog to digital conversion, multiplexing, amplitude shift keying, frequency shift keying, phase shift keying, pulse code modulation, quadrature amplitude modulation, differential modulation, error control coding, and line coding. Marks are allocated for different evaluation criteria like apparatus required, calculations, viva voce, and record maintenance.

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57 views3 pages

Aim/Principle/Apparatus Required/procedure Tabulation/Circuit/ Program/Drawing Calculation & Results Viva-Voce Record Total 25 30 25 10 10 100

This document outlines an end semester practical examination for a Communication Systems Laboratory course. It lists 19 questions, with each question having two parts - (a) requires performing an experiment related to communication systems concepts and (b) writing a MATLAB program related to digital modulation techniques. Students must answer any one of the 19 questions. The questions cover topics like analog to digital conversion, multiplexing, amplitude shift keying, frequency shift keying, phase shift keying, pulse code modulation, quadrature amplitude modulation, differential modulation, error control coding, and line coding. Marks are allocated for different evaluation criteria like apparatus required, calculations, viva voce, and record maintenance.

Uploaded by

rajkumarsac
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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B.E / B.Tech. PRACTICAL END SEMESTER EXAMINATIONS, NOVEMBER / DECEMBER 2019


Fifth Semester

EC8561 - COMMUNICATION SYSTEMS LABORATORY

(Regulations 2017)

Time : 3 Hours Answer any one Question Max. Marks 100

(To be filled by the question paper setter)

Aim/Principle/Apparatus Tabulation/Circuit/ Calculation Viva-Voce Record Total


required/Procedure Program/Drawing & Results
25 30 25 10 10 100

a. Convert any analog signal to a discrete time sequence and also reconstruct the resultant
1.
signal back into continuous form. (50)

b. Write a MATLAB program, that encodes and decodes ASK. (50)


a. Design a device in which, information from different channels can be multiplexed into a
2.
single channel, using time allocation. (50)

b. Write a MATLAB program, that encodes and decodes FSK. (50)


a. Perform a technique of analog modulation, in which the amplitude of the carrier signal
3.
varies in accordance with the message signal. (50)

b. Write a MATLAB program, that encodes and decodes BPSK. (50)


a. Perform a technique of analog modulation, in which the frequency of the carrier signal
4.
varies in accordance with the message signal. (50)

b. Write a MATLAB program, that simulates a type of PSK. (50)


a. Experiment an analog modulation technique, where the amplitude and phase of
5.
modulated signal remains constant. (50)

b. Write a MATLAB program for DPSK generation. (50)


a. Demonstrate the modulation, where analog signal is converted to serial binary digits
6.
using PCM. (50)

b. Write a MATLAB program that encodes QPSK. (50)


a. Perform Pulse code modulation and demodulation. (50)
7.
Page 2 of 3

b. Write a MATLAB codes for QAM generation. (50)


a. Demonstrate the modulation, where analog signal is converted to serial binary digits
8.
using DM. (50)

b. Using MATLAB, device a script to implement an error control scheme using linear
combinations. (50)
a. Demonstrate the modulation, which suffers from granular noise and slope overload
9.
distortion. (50)

b. Using MATLAB, device a script to implement an error control scheme using cyclic
rotation. (50)
a. Perform any two-line coding schemes. (50)
10.

b. Simulate Convolutional coding using MATLAB. (50)


a. Convert any analog signal to a discrete time sequence and also reconstruct the resultant
11.
signal back into continuous form. (50)

b. Using MATLAB write a program for Communication Link simulation. (50)


a. Design a device in which, information from different channels can be multiplexed into a
12.
single channel, using time allocation. (50)

b. Using MATLAB, write a script that maps all possible symbols of a four level QAM. (50)
a. Perform a technique of analog modulation, in which the amplitude of the carrier signal
13.
varies in accordance with the message signal. (50)

b. Using MATLAB, write a script that maps all possible symbols of BPSK. (50)
a. Perform a technique of analog modulation, in which the frequency of the carrier signal
14.
varies in accordance with the message signal. (50)

b. Using MATLAB, write a script that maps all possible symbols of QPSK. (50)

a. Experiment an analog modulation technique, where the amplitude and phase of


15.
modulated signal remains constant. (50)

b. Simulate Convolutional coding using MATLAB. (50)


Page 3 of 3

a. Demonstrate the modulation, where analog signal is converted to serial binary digits
16.
using PCM. (50)

b. Using MATLAB, device a script to implement an error control scheme using linear
combinations. (50)
a. Demonstrate the modulation, where analog signal is converted to serial binary digits
17.
using DM. (50)

b. Write a MATLAB code for Signal Constellation of QAM. (50)


a. Demonstrate the modulation, which suffers from granular noise and slope overload
18.
distortion. (50)

b. Write a MATLAB code for Signal Constellation of BPSK. (50)


a. Perform any two-line coding schemes. (50)
19.

b. Write a MATLAB code for Signal Constellation of QPSK. (50)

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