# VU HELP

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# Assignment No. 03 due date 14 July, 2017

Instructions:

You need to use MS Word document to prepare and submit the assignment on VU-LMS.

It should be clear that your assignment will not get any credit if:

The assignment is submitted after due date.

• The assignment is not in the required format (doc or docx)
• The submitted assignment does not open or file is corrupt.
• Assignment is copied(partial or full) from any source (websites, forums, students, etc)

Objective:

The objective of this assignment is to learn about:

Transmission Impairments

 Question  No. 1 Imagine a signal (P1) travels through an amplifier and its power is increased 20 times. This means that P2 (the amplified signal) =20P1. You are required to calculate the amplification (gain of power) by writing all necessary calculations and formula.   Question No. 2             Suppose that S/N i.e. signal to noise ratio = 34dB and bandwidth of the channel is 2 kHz. You are required to calculate the theoretical channel capacity in bps by writing all necessary calculations and formula. Best of Luck J

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okay :)

SOLUTION IDEA

Question  No. 1

Imagine a signal (P1) travels through an amplifier and its power is increased 20 times. This means that P2 (the amplified signal) =20P1.

You are required to calculate the amplification (gain of power) by writing all necessary calculations and formula.

How to calculate signal amplification

Formula for Signal Amplification: 10 log (P2/P1)
Putting the above values,

= 10 log (20P1/P1)
= 10 log (20)
= 13 dB.

Question No. 2

Suppose that S/N i.e. signal to noise ratio = 34dB and bandwidth of the channel is 2 kHz. You are required to calculate the theoretical channel capacity in bps by writing all necessary calculations and formula.

How to calculate Channel Capacity
Formula for Channel Capacity = B log base 2 (1 + S/N ) in bps
Here,
B = Bandwidth of the channel = 2 kHz = 2000 Hz
S/N = Signal to Noise ratio = 34 dB = 2511

Putting the values in the formula:
= 2000 log base 2 ( 1 + 2511)
=  22,589 bps

solution assigment no 3 cs601

??? solution

idea solution

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