University Wireless Communication Assignment: Signal Strength Analysis

This document presents a student's solution to a wireless communication assignment, focusing on signal strength analysis and related concepts. The assignment includes GNU Octave code for signal generation and visualization, demonstrating the relationship between frequency and amplitude. The student further analyzes WiFi signal strength, exploring factors that cause attenuation, such as distance, antenna obstructions (hand and aluminum foil), and frequency band. The student utilizes the Acrylic WiFi Home application to measure signal strength, observe the impact of channel capacity, and troubleshoot access point signal issues. The assignment highlights the importance of channel capacity, the steps to troubleshoot signal strength, and the application of Acrylic Wi-Fi Home to optimize network signals. The student's analysis also includes observations of signal strength variations at different distances and frequencies, providing practical insights into wireless communication principles. A bibliography of relevant sources supports the findings.

Running head: WIRELESS COMMUNICATION
WIRELESS COMMUNICATION
Name of the Student
Name of the University
Author Note

1WIRELESS COMMUNICATION
Response to question no 2:
GNU Octave Code:
t= 0:0.01:50;
A=1;
f1= 2;
subplot(2,1,1);
y1= A*sin(2*pi*f1*t);
plot(t,y1);
grid on;
xlabel('Time(sec)')
ylabel('Amplitude');
title('Name:Malintha Madushan Delapalage, SID:11663242')
subplot(2,1,2);
f2= 2*f1;
y2= A*sin(2*pi*f2*t);
plot(t,y2);
grid on;
xlabel('Time(sec)')
ylabel('Amplitude');
title(' Name:Malintha Madushan Delapalage, SID:11663242')

2WIRELESS COMMUNICATION
Response to question no 3
I have learnt the detailed analysis of signal strength and the factors which cause the
attenuation of the WiFi signal strength from the project 3-4 and 3-5. I have pursued the
detailed analysis of the signal strength of the respective access points with the help of the
Acrylic WiFi Home application. The Acrylic Wifi Home is generally used for Wifi scanning,
however it is an effective tool which is used for locating access points and the signal
strengths of those access points as well as determines the numbers of access points present
over the channel.
I have observed the signal strength is depended on the signal bandwidth in this
project. I have performed the detailed analysis over the variation in the signal strength
between the access points and the device. When I kept the laptop at a distance of 30 feet from
the access points the signal is still stable. At this point I have covered the antenna with my
hand and no such signal variation observed at this stage. Thereafter, I have covered the
antenna with the aluminium foil then a slight variation in the signal observed, the signal
strength boosted slightly. Then I slowly moved my device far more from the stable state, then
a slight variation occur at a distance of 52feet. The signal strength became weak as well as
the download speed also reduced. At 2GHz no signal has been observed. However, at 5GHz,
more filtered and better result observed while scanning the Wi-Fi signal strength.
While performing this project I have learnt and gathered some knowledge over:
i) The steps and the procedure to troubleshoot the signal strength of the access point.
ii) The channel capacity plays an important role in delivering a better signal strength.
iii) The application Arcylic Wi-Fi Home help me to performed the detailed analysis
and help me optimize t he signal strengths of the network.

3WIRELESS COMMUNICATION
Bibliography
Burigo, L., Jäkel, O., & Bangert, M. (2018). MATRAD-AN OPEN-SOURCE TREATMENT
PLANNING TOOLKIT FOR EDUCATIONAL PURPOSES. MEDICAL
PHYSICS, 6(1).
de Carvalho, J. A. R., Veiga, H., Pacheco, C. F., & Reis, A. D. (2017). Extended Research on
Effects of Encryption and Topology on Performance of IEEE 802.11 a Laboratory
Links. IAENG International Journal of Computer Science, 44(2).
Gorade, S., VattI, R., Kaurwad, V., Bhakre, S., & Kadam, R. (2018, March). Enhancement of
Signal Strength of Single Antenna Wi-Fi Routers. In 2018 International Conference
on Current Trends towards Converging Technologies (ICCTCT)(pp. 1-3). IEEE.
Lachniet, J. (2019). Introduction to GNU Octave. Lulu. com.