Wireless Networking Assignment: Link Budget and In-Flight Systems

This assignment solution delves into the intricacies of wireless networking, beginning with a detailed calculation of the link budget between a transmitter and receiver, accounting for gains and losses in the signal path. It then explores the use of passive repeaters to improve signal strength, particularly in scenarios with obstacles. The assignment further examines an emerging wireless technology for in-flight entertainment systems, analyzing its applications, strengths, weaknesses, and potential security issues. This technology aims to provide seamless communication within aircraft cabins, offering a better passenger experience than current wired systems, while addressing concerns about backward compatibility and signal interference. The solution concludes with a comprehensive list of references supporting the analysis and findings.

Running head: Wireless networking 1
WIRELESS NETWORKING
[Author Name(s), First M. Last, Omit Titles and Degrees]
[Institutional Affiliation(s)]
Author Note
[Include any grant/funding information and a complete correspondence address.]

Running head: Wireless networking 2
1 QUESTION 1
a)
To calculate the Link budget between the Transmitter and Receiver, we have to put into account
the Gains and Losses the signal undergoes before it reaches the receiver.
Transmitter Power = +23 dB
Transmitter cable loss = -3b dB
Free space loss @ 0.6m = 100 + 20.log(D) + 20.log(f)
Where D=km, f=GHz
Subsitituitng the values in the equation
Free space loss = 100 + 20.log(0.0006) + 20 . log(18)
=60.67 dB
Free space loss = -60.67 dB
Receiver cable loss = -4dB
Receiver Gain = +39.5 dB
Therefore, Link Budget = +23-3-60.67-4+39.5
-5.17 dB
b)

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The passive repeater is placed between the transmitter and the receiver to amply the signal hence
improving the link budget especially in places where an obstacle has blocked the direct line of
sight between the transmitter and the receiver. It does this by closing the microwave link (Al-
Qawasmi & Tlili, 2018)
2 QUESTION 2
IN-FLIGHT ENTERTAINMENT SYSTEM
An emerging wireless technology that allow for wires communication of devices inside an
aircraft. Unlike WIFI and Bluetooth that ate likely to course interference with the flight
communication system, this technology is designed to seamlessly work inside the cabin without
posing a threat of causing signal interference.
APPLICATION
Currently the need to make stop overs has reduced and consequently flights take long hours. This
makes the passengers exhausted and bored hence there is need to keep them entertained on
board, however the current wired technology does not provide better experience as passenger
would prefer to use their devices such as mobile phones and tablets to interoperate with the flight
entertainment system. A safe wireless technology provides this much needed comfort. For
example, a wireless headphone would be more comfortable and flexible than one wired on the
seat.
STRENGTHS
1. A seamless inflight wireless communication

Running head: Wireless networking 4
2. Better connection than other wireless technologies such as Bluetooth
WEAKNESSES
1. A new standard has to be developed hence backward compatibility with other devices
could be a challenge
SECURITY ISSUES
1. Handing control to passengers through bring your own device technology is possible
security since their actions may not be checked
2. Since no technology is 100% a mere signal interference poses a great safety threat
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