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CS601 Assignment No 03 Solution & Discussion Due Date: 10-02-2015

Assignment No. 3

Semester: Fall 2014

Data Communication - CS601

 

Total Marks: 10

 

Due Date: 10/02/2015

 

Objective:

 

To have the understanding of Transmission Impairments and Multiplexing.

 

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                                                                                                       Assignment

 

Question. 1

 

Six channels, each with a 75-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10 kHz between the channels to prevent interference? Give your answer in following table with correct values.

 

 

Calculations

Bandwidth with proper Unit

 

 

 

 

Question. 2

 

A signal travels through an amplifier and its power is increased 100 times. Calculate the amplification of the signal. Give your answer in following table with correct values and proper unit.

 

 

Calculation

Amplification with proper unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wish You All The Best

J

 

Views: 12421

Replies to This Discussion

Answer.

For Six channels, we need at least five guard bands (Channels must be separated by strips of unused BW (guard bands) to prevent signals from Overlapping). This means that the required bandwidth is at least given as:

 

Total Channels = 6

Total Frequency of one channel = 75 KHz

Guard Band frequency b/w channels = 10 KHz

Bandwidth = Freq. of one channel × Total Channels + Guard band freq. × Total guard bands

Bandwidth = 500 KHz           Ans.

 

Calculations

Bandwidth with proper Unit

75 × 6 + 5 × 10

Bandwidth = 450 + 50

500 KHz

pg#143 Ex.7.1

p2=100p1 because signal is amplified  100 times 

A signal travels through an amplifier and its power is increased 100 times. Calculate the amplification of the signal. Give your answer in following table with correct values and proper unit.

I need solution!

In this case, the amplification (gain of power) can be calculated as

10 log10 (P2/P1) = 10 log 10(100P1/P1)

                              =10 log10 (100)  

                              = 10 (2)

                              = 20dB


Sahrish is it correct answer bcoz i have done it as you do

Yes Dear its 100% correct....

Fall 2014_CS601_3 solution

Attachments:
Yeh handouts mai kahan hair dono questions k articles plz somebody tell me

table pe ans hi likhna hai ya table se uper ye solve kerna phele?

koi batya ga prpper unit ka mtlab kiya hai

and handout main assignment se related examples kahan pe hain plz lec. No bta de thnks

yes I need too k kahan hai assignment mai yeh q

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