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Assignment No 3 Data communication (CS601) Solution and Discussion Spring 2014 Due Date: July 14, 2014

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Question 1: (5 Marks)
When a signal travels from source to destination, it may b affected by different external factors that cause the loss of energy, due to which the signal may differs from its actual shape. In the given table you are required to identify the type of noise with respect to noise source.

Noise Source                                                             Noise Type

Telephone Wire
Water Pump
Extra Signal generated by Motion of Electron

Question 2: (5 Marks)
Suppose a signal is generated from a source with initial power of 1000W but due to attenuation it is received at destination (80 Km away from source) with power of 100W. Find the total power loss in decibels by writing formula with all calculation steps.

Question 3: (5 Marks)
Suppose you need to have simultaneous transmission of signals through a single medium, then which technique will be used to fulfill this requirement? Also describe, how does that technique work at sender and receiver end?

NOTE: Do not put any query on MDB about this assignment, if you have any query then email at

Deadline: Your assignment must be uploaded/submitted on or before 14th July 2014.

Views: 16221


Replies to This Discussion

laikun -2 kese aye ga es ka ans yu -1 aa rha hai

yup i knw that was calculated by mistake

thanks for sharing

Asalam O Alaikum!

Friends please tell me from which lectures these question are taken. I had a problem that is why I was unable to listen or read anything. 

By this help I will be able to directly go to that lecture and solve the assignment. Thanks

this assignmnt is taken from lecture 27-29, 3rd question is taken from lec 29


Solution of question 1

Noise Source

Noise Type

Telephone Wire

Cross Talk

Water Pump

Induced Noise


Impulse Noise

Extra Signal generated by Motion of Electron

Thermal Noise


Induced Noise

what abt question 2?

Question 1, am i right :-p

Telephone Wire = Cross Talk

Water Pump      = Induced Noise

Earthquake       = Impulse Noise

Extra Signal generated by Motion of Electron = Thermal Noise

Grinder             = Induced Noise

First time Commenting 

question no 2 & 3 ka complete solution?

hahahahaha boht hi intelligent ho ap

ye solution kahn sy mila ap ko

boht hi confusing ha

but kiya yeh true hai


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