WLS5000_Lab10_PathLossCalculator
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Humber College *
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Apr 3, 2024
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WLS-5000 Applied Electromagnetics Wireless Telecommunications Lab-10
Indoor / Outdoor Path Loss Calculator
1
Lab Report Prepared By
Name: ________________________
Name: ________________________
Student ID: ____________________
Student ID: ____________________
2
Objectives
Learning how empirical path loss models are developed.
Implementing a path loss predicting calculator for indoor and outdoor transmission environments. 3
Materials
Computer with MS Excel (will be provided in the lab) 4
Information
Propagation has many components such as refraction, diffraction, reflection, scattering and multi-path fading. Due to
the complexity involved with modelling the propagation environments, empirical path loss predicting models have been
developed based on field data and measurements. The path loss models are generally mathematical functions that take
inputs or variables describing the environment parameters and calculate the estimated total path loss based on these
variables as an output. With the advancement in mobile technologies and the growing need for reliable connectivity and wireless network
capacity, indoor base stations are increasingly becoming an important service offering by network providers. In this lab,
we will use the International Telecommunication Union’s (ITU) radio propagation model that estimates the path loss
inside a residential or commercial space (i.e. a room, a space divided by walls or floors). Using ITU’s model and MS Excel,
we will build an Indoor Path Loss Calculator. We will also practice and build a path loss calculator based on the Hata-
Okumura model.
5
Pre-lab Assignment
Review the class notes on RF Signal Propagation.
Review the ITU’s indoor path loss model in the following link:
https://www.itu.int/dms_pubrec/itu-r/rec/p/R-REC-P.1238-0-199705-S!!PDF-E.pdf
6
Experiment Procedure Humber College Institute of Technology and Advanced Learning
WLS-5000 Applied Electromagnetics Wireless Telecommunications 6.1 Part-A: Indoor Path Loss Calculator
1.
Review the ITU’s indoor path loss model in the following link:
https://www.itu.int/dms_pubrec/itu-r/rec/p/R-REC-P.1238-0-199705-S!!PDF-E.pdf
2.
Using the provided formulas and tables, create a path loss calculator in MS Excel as shown in Figure 1. Please build
your calculator to take the inputs/variables and calculate the total indoor path loss based on the inputs. Note
: Please assume for this lab, we will ignore the shadow and fading effects. Figure 1:
Indoor path loss calculator example. 3.
Using your calculator, find the values for the following scenarios:
(a)
(b) (c)
(d) 4. Please attach your calculator file or screen shots with your submission.
6.2 Part-B: Outdoor Path Loss Calculator (Using Okumura-Hata Model)
1.
Review the simplified Hata-Okumura model in your class notes or in the following link:
Humber College Institute of Technology and Advanced Learning
L
f
(dB)
L
total
(dB)
f (MHz)
1900
N
30
d (m)
20
n
4
Indoor scenario 1
L
f
(dB)
L
total
(dB)
f (MHz)
1900
N
28
d (m)
10
n
3
Indoor scenario 2
L
f
(dB)
L
total
(dB)
f (MHz)
1800
N
22
d (m)
30
n
5
Indoor scenario 3
L
f
(dB)
L
total
(dB)
f (MHz)
2000
N
30
d (m)
15
n
3
Indoor scenario 4
WLS-5000 Applied Electromagnetics Wireless Telecommunications https://en.wikipedia.org/wiki/Hata_model
2. Using the provided formulas and coefficients, create a path loss calculator in MS Excel as shown in Figure 2. Please
build your calculator to take the inputs/variables and calculate the total outdoor path loss based on the inputs. Note
: For the correction factor CH, please assume small/medium size city
.
Figure 2:
Outdoor path loss calculator example. 3.
Using your calculator, find the values for the following scenarios:
(a)
(b) 4. Please attach your calculator file or screen shots with your submission.
Humber College Institute of Technology and Advanced Learning
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