Wireless Network & Communication

This document provides information about TCP/IP protocol, network access layer, and internet layer. It also explains the connection diagram between the translators of French and Chinese Prime Ministers. Additionally, it discusses the characteristics of different waves and provides the equation for a general sinusoidal wave. The document also includes a chart and calculations related to a specific wave.

MITS5003 0
Wireless Network & Communication

MITS5003 1
Question 1
TCP refers to the transmission control portico which is a standard that has the
ability to define how to develop and manage a network communication using application
programs. IP and network access both are major layers of TCP/IP protocol. Mainly, the
network access layer contains both physical and data link layer of the OSI model but the IP
layer parallels the functions of the network layer (Omni Secu, 2016). It is observed that the
network access layer is able to control the physical transmission of signals but the internet
layer is capable to manage the logical transmission of signals over the complete computing
networks. The main protocol used in the internet layer is an internet protocol (IPv4 and
IPv6) but in-network access layer Ethernet is used as a protocol which is able to manage
the complete process. In the context of control information, the internet layer is embedded
with the IP protocols but in-network access layer control information is embedded with
ARP protocol (Geeks for Geeks, 2018).
Question 2
It is observed that both prime ministers have a translator and telephone system for
performing data communication. The below connection diagram will help for
understanding the situation which connects telephone and translator of French PM to the
translator of Chinese PM.

MITS5003 2
Both French and Chinese PMs speak directly to each other using a translator system
that has the potential to convert signals into another form. It is assumed that the French
PM speaks to Chinese PM then the information is transmitted through French translator
that converts the signal into the English language. The developed translator passes the
transmitted information to Chinese PM’s translator using the telephone and telephonic
lines. Finally, the translator used by Chinese PM translates the signals and transfer to the
Chinese PM that receives a proper signal sent by French PM.
Question 3
First wave:
 Amplitude= 15
 Time period= 3 seconds
 Phase= 0 degree
 Frequency= 1/3 Hz
For second wave:
 Amplitude= 4
 Time period= 6.5 seconds
 Phase= 0 degree
 Frequency= 1/6.5 Hz
For third wave:
 Amplitude= 7.8
 Time period= 2.3 seconds
 Frequency= 1/2.3 Hz
 Phase= 90 degree

MITS5003 3
Question 4
a. 3𝑆𝑖𝑛(2𝜋 (200)𝑡)
It is observed that the general sinusoidal wave is given as:
X(t)= A*sin(wt+phase)
So, by comparing the provided equation with normal form the asked values can be
calculated and these are described below:
 Amplitude= 7.8
 Frequency= 200 Hz
 Time period= 1/200 seconds
 Phase= 0 degree
1 118 235 352 469 586 703 820 937 1054117112881405
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Chart Title
time y
b. 14𝑆𝑖𝑛(2𝜋(50)𝑡 + 90)
 Amplitude= 14
 Frequency= 50 Hz
 Time period= 1/50 seconds
 Phase= 90 degree

MITS5003 4
0.00020.00200.00380.00560.00740.00920.01100.01280.01460.01640.01820.0200
13.9723713.9378713.8896113.8276413.7520213.6628313.5601613.4441113.3147913.1723313.0168712.8485612.6675812.4740912.2682912.0503911.8205911.5791311.3262411.0621710.7871910.5015510.205569.899499.583669.258378.923948.580708.228997.869177.501587.126586.744556.355875.960915.560075.153744.742334.326243.905883.481663.054012.623342.190081.754671.317520.879070.439750.00000-0.43975-0.87907-1.31752-1.75467-2.19008-2.62334-3.05401-3.48166-3.90588-4.32624-4.74233-5.15374-5.56007-5.96091-6.35587-6.74455-7.12658-7.50158-7.86917-8.22899-8.58070-8.92394-9.25837-9.58366-9.89949-10.20556-10.50155-10.78719-11.06217-11.32624-11.57913-11.82059-12.05039-12.26829-12.47409-12.66758-12.84856-13.01687-13.17233-13.31479-13.44411-13.56016-13.66283-13.75202-13.82764-13.88961-13.93787-13.97237-13.99309-14.00000-13.99309-13.97237-13.93787-13.88961-13.82764-13.75202-13.66283-13.56016-13.44411-13.31479-13.17233-13.01687-12.84856-12.66758-12.47409-12.26829-12.05039-11.82059-11.57913-11.32624-11.06217-10.78719-10.50155-10.20556-9.89949-9.58366-9.25837-8.92394-8.58070-8.22899-7.86917-7.50158-7.12658-6.74455-6.35587-5.96091-5.56007-5.15374-4.74233-4.32624-3.90588-3.48166-3.05401-2.62334-2.19008-1.75467-1.31752-0.87907-0.439750.000000.439750.879071.317521.754672.190082.623343.054013.481663.905884.326244.742335.153745.560075.960916.355876.744557.126587.501587.869178.228998.580708.923949.258379.583669.8994910.2055610.5015510.7871911.0621711.3262411.5791311.8205912.0503912.2682912.4740912.6675812.8485613.0168713.1723313.3147913.4441113.5601613.6628313.7520213.8276413.8896113.9378713.9723713.9930914.00000
Y
Y
c. 4𝑆𝑖𝑛(650𝜋𝑡 + 180)
 Amplitude= 4
 Frequency= 325 Hz
 Time period= 1/325 seconds
 Phase= 180 degree
1 24 47 70 93 116 139 162 185 208 231 254 277
-5
-4
-3
-2
-1
0
1
2
3
4
5
time
y
d. 6𝑆𝑖𝑛(700𝜋𝑡 + 270)
 Amplitude= 6
 Frequency= 350 Hz
 Time period= 1/350 degree
 Phase= 270 degree

MITS5003 5
1 18 35 52 69 86 103 120 137 154 171 188 205 222 239 256 273
-8
-6
-4
-2
0
2
4
6
8
y
time
Question 5
F= 6 GHz
Distance= 35863 kilometer
Now, free space loss= 20log10 (F) +20log10 (D) - 147.56 dB
Or, free space loss= 20log10 (6*109) +20log10 (35.863*106) - 147.56 dB
So, free space loss= 199.09 dB
Question 6
S(𝑡) = 5*sin(100𝜋𝑡) + sin(600𝜋𝑡) + sin(300𝜋 )𝑡
By solving above problem it is evaluated that frequency signals are 50 Hz, 150 Hz
and 30 Hz and total frequency may be gathered by determining GCF.
 So, frequency= 50 Hz
 Bandwidth= 250 Hz
Spectrum:

MITS5003 6
-
300 -
250 -
200 -
150 -
100 -50 0 50 100 150 200 250 300
0
0.5
1
1.5
2
2.5
3
Frequency
Frequency
Amplitude
Channel capacity:
C= 2*B*log2(M)
By putting the value of bandwidth= 250 Hz and M= 2, 4 and 8 total channel capacity
may be obtained. The below values indicates the channel capacity at different levels:
At M= 2
C= 500 bits/s/Hz
At M= 4
C= 1000 bits/s/Hz
At M= 8
C= 1500 bits/s/Hz
Question 7
As per Nyquist Criteria, the data rate of the signal can be enhanced using two factors
such as bandwidth and levels. For the provided condition data rate may be increased by
increasing levels (M) in the signal but it can reduce the effectiveness of signal which is a key
limitation of this process.

MITS5003 7
Question 8
Packet switching Circuit switching
In which directly data transfer takes place It contains three stages including connection
establish, data transfer and connection
release
each data unit just know the final point Each data unit know the complete process
Data is processed at all computing nodes Data is passed at the source only
no uniform delay occurs Uniform delay occurs
Advantages of packet switching
 Less wastage of source
 Include store and forward process
Advantages of circuit switching
 It is more reliable
 Transmission of data is done by the source
 Provide the quality of service
Question 9
D= 3.57*sqrt(kh1+kh2)
Put, D= 60 KM
H1= 4*H2 (as per the given information)
K= 1.3
D= 3.57*sqrt(1.3(5*H2))
So, H2= 42.369 meter and H1= 169.476 meter

MITS5003 8
References
Geeks for Geeks (2018). TCP/IP Model. Retrieved from:
https://www.geeksforgeeks.org/tcp-ip-model/
Keary, T. (2019). Circuit Switching vs Packet Switching. Retrieved from:
https://www.comparitech.com/net-admin/circuit-switching-vs-packet-switching/
Omni Secu (2016). Four Layers of TCP/IP model, Comparison and Difference between TCP/IP
and OSI models. Retrieved from: http://www.omnisecu.com/tcpip/tcpip-model.php
Tech difference (2016). Difference between Circuit Switching and Packet Switching.
Retrieved from: https://techdifferences.com/difference-between-circuit-switching-
and-packet-switching.html