This article lists 100+ Mobile Communication MCQs for engineering students. All the Mobile Communication Questions & Answers given below include a hint and wherever possible link to the relevant topic. This is helpful for the users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the Mobile Communication topic.
Mobile communication is a technology that allows multiple users anywhere on geolocation to communicate wirelessly using a device like mobile phones or cord phones.
This technology is also called a mobile cellular network. For mobile communication, to begin it require 2 people with a mobile phone to communicate wirelessly, where one person acts as a transmitter who dials the call number to a specific receiver, and the other acts as a receiver who receives the call from the sender to communicate.
Modification in mobile features is responsible for the evolution of mobile communication generation such as 1G, 2G, 3G, 4G, and 5G technologies which are further integrated using GSM, GPRS technologies.
Mobile communication provides features such as high load balancing capacity, scales over a wide area, and good network management systems. The advantage of using mobile communication is location independent, wireless communication operates at higher speed, easily accessible, and provides a connection.
1]. Mobile communication network is also called as ______ network.
Cellular network
Mobile network
2G network
Both a and b
Hint
2]. _______ technology is used for communicating over large distances wirelessly.
Mobile communication
Land communication
Communication
All the above
Hint
3]. Which of the following are not used in mobile communication?
Wires
Cables
Wired antenna
All the above
Hint
4]. ______ technology has grouped different mobile telephony and data type technologies to over 3G.
Hint
5]. A mobile phone uses ______ type of duplex communication.
Half
Full
Zero
Both a and b
Hint
6]. A full-duplex communication is _______ way communication.
Single
Two
Multiple
All the above
Hint
7]. Which of the following are the features of mobile communication?
High load balancing capacity
Highly scalable
Good network management system
All the above
Hint
8]. Which of the following are the examples of mobile communication systems?
Cellular phones
Cordless phones
Wired phones
Both a and b
Hint
9]. Which of the following are the facilities of mobile communications?
Mobile 2way radio
Mobile telephone
Public land radio
Amateur radio
All the above
Hint
10]. Mobile 2-way radio is ________ communication systems.
One to many
Two-way
Full duplex
Simplex
Hint
11]. Mobile 2-way radio operates in _______ mode.
Half-duplex
Full duplex
Multi duplex
None of the above
Hint
12]. Citizen band radio operates at _______ frequency.
26 to27.1 MHz
1.8 MHZ
2MHHz
3.5 MHz
Hint
13]. Citizen band radio communication use ______ type of modulation.
Hint
14]. Citizen band radio at 10KHz has _______ number of channels.
Hint
15]. Mobile 2-way radio uses _______ types of service.
Commercial
Non-commercial
Paid
All the above
Hint
16]. Which of the following is a mobile 2-way radio non-commercial type of service?
Press to talk
Switch to talk
Hold to talk
None of the above
Hint
17]. A mobile 2-way radio non-commercial types of service uses ______ modulation.
Double sideband suppressed carrier
Single sideband suppressed carrier
Sideband carrier
All the above
Hint
18]. Public land radio is a _________ system.
One to many
Two way FM radio
Full duplex FM radio
Simplex
Hint
19]. Which of the following is the application of Public land radio?
Fire
Police
Municipal agencies
All the above
Hint
20]. Is Public land radio limited to a certain area?
Hint
21]. Mobile telephones offer _______ transmission.
Hint
22]. Mobile telephones are ________ systems.
One to one
One to many
Many to many
None of the
Hint
23]. Do mobile telephones permit communication at a time?
Hint
24]. Mobile telephones are safeguarded with _______ for privacy reason.
Unique mobile number
Id card
SIM
IMEI
Hint
25]. Amateur radio covers ________ frequency band.
Broad
Narrow
Wide
None of the above
Hint
26]. Amateur radio with a broadband frequency ranges from ______ to _______.
1.8MHz to 30MHz
2MHZ
3MHZ
10Mhz to 20MHz
Hint
27]. Which of the following are amateur radio frequencies?
FSK
ASK
Continuous wave
All the above
Hint
28]. FSK is abbreviated as __________.
Frequency shift keying
Frequency side keying
Forward shift keying
All the above
Hint
29]. ASK is abbreviated as _______.
Amplitude shift keying
Ample shift keying
Altitude shift keying
None of the above
Hint
30]. When was mobile communication introduced?
Hint
31]. Who firstly introduced mobile communication?
Motorola
LG
Samsung
None of the above
Hint
32]. Mobile communication technology is built with ________.
Protocols
Speed
Services
All the above
Hint
33]. _______ is responsible for the evolution of mobile communication generation.
Modification
Replacements
Fixing
None of the above
Hint
34]. Which of the following are the technologies used in mobile communications?
Hint
35]. Mobile communication technology used in 2021 is _______.
Hint
36]. Which of the following is 1st generation of wireless mobile communication technology?
Hint
37]. 1G uses _______ type of signals to communicate data.
Digital
Analog
Discrete
None of the above
Hint
38]. 1G was introduced in _______ year.
Hint
39]. 1G supports _______ type of mobile communication.
Voice
Audio
Video
Both a and b
Hint
40]. 1G was introduced by_______ country.
Hint
Mobile Communication MCQs for Interviews
41]. 1G has the speed of _________.
2.4 kbps
3 kbps
4 kbps
5 kbps
Hint
42]. Which of the following are the feature of 1G?
Poor quality of voice
Less secure
Power consumption is more
All the above
Hint
43]. _______ is a second-generation technology.
Hint
44]. 2G technology uses _______ signals.
Analogue
Digital
Continuous
None of the above
Hint
45]. 2G technology was released by ________ country.
Germany
Finland
French
China
Hint
46]. 2G technology was released by Finland in _______ year.
Hint
47]. 2G mobile communication uses ________ technology.
GSM
Wifi
GPRS
Both a and c
Hint
48]. 2G mobile communication operates up to _______ speed.
64 kbps
50 kbps
60 kbps
40 kbps
Hint
49]. Which of the following are the features of 2G mobile communication technology?
Better quality compared to 1G
Supports multimedia
Supports text
All the above
Hint
50]. Is GPRS technology introduced along with 2G mobile communication technology?
Hint
51]. Which of the following are the features supported by GPRS in 2G technology?
Emails
Web browsing
Downloads
All the above
Hint
52]. 2G technology with GPRS is also called as _________.
Hint
53]. Third-generation mobile communication technology is represented as _______.
Hint
54]. Which of the following are the 3G mobile communication features?
High internet speed
High data speed
3D gaming
All the above
Hint
55]. What is the data speed range of 3G mobile communication?
144kbps to 2Mbps
100kbps to 2Mbps
200kbps to 2Mbps
300 kbps to 345 Kbps
Hint
56]. Which of the following are web-based applications used by 3G?
Video conference
Emails
Multimedia
All the above
Hint
57]. Which of the following are the disadvantages of 3G technology?
Costly mobile devices
Requires high infrastructure
High maintenance cost
All the above
Hint
58]. The next generation of 3G is ________.
Hint
59]. Mobile is also called as _________.
Cell phone
Handphone
Mobile cellular network
All the above
Hint
60]. GPS stands for _________.
Global positioning systems
Global partial system
Geo-positioning system
All the above
Hint
61]. The function of GPS is ________.
Navigates to correct address on earth
Locates address on earth
Points address
All the above
Hint
62]. Which of the following are the components of GPS?
Satellites
Ground stations
Transmitter and receiver
All the above
Hint
63]. GPRS stands for ________.
General packet radio receiver
Geo packet radio receiver
Gradient packet radio receiver
None of the above
Hint
64]. GPRS is used in ________ mobile technology.
Hint
65]. ______ has led to the growth of mobile communication services.
Increase in battery consumption
Increase in IC technology
Increase in DSP
All the above
Hint
66]. In cellular network frequency spectrum are divided into _________.
Discrete channels
Non-discrete channel
Class of frequency
None of the above
Hint
67]. _______ are added to geographic cells of a specific area.
Discrete channels
Non-discrete channel
Class of frequency
None of the above
Hint
68]. Analog cellular phone is ______ generation technology.
Hint
69]. Digital cellular phone is ______ generation technology.
Hint
70]. AMPS stands for ________.
Advanced mobile telephony system
Advanced medium telephony system
Automobile telephony system
None of the above
Hint
71]. 1G technology was developed based on ______.
Advanced mobile telephony system
Advanced medium telephony system
Automobile telephony system
None of the above
Hint
72]. AMPS is a _______ service.
Standard cellular telephone service
Cellular telephone service
Standard cellular service
None of the above
Hint
73]. AMPS in 1G was introduced by ________.
Illinois Bell
Richard
Charles
Dennis
Hint
74]. Analogue cellular phone has a maximum deviation of the frequency of ______ for 100% modulation.
+/- 12 KHz
+/- 11 KHz
+/- 10 KHz
+/- 9 KHz
Hint
75]. AMPS uses _______ modulation technique.
Frequency division multiple access
Phase modulation
Amplitude modulation
All the above
Hint
76]. Does AMPS separate transmissions in frequency domain?
Hint
77]. Subscribers in an analog cellular phone are assigned _______ for mobile call purpose.
Voice channels
Audio channels
Video channels
Both a and b
Hint
78]. Which of the following is the process performed at receiver end in mobile communication?
Modulation
Decoding
Demodulation
Both b and c
Hint
79]. Audio channels are also called as ________.
Voice channels
Image channels
Video channels
Both a and b
Hint
80]. Subscribers in an analog cellular phone are assigned with ____ number of audio channels for mobile call purpose.
Add description here!
Hint
81]. Which of the following are analog cellular phones, audio channels for mobile call purpose?
Forward
Reverse
One way
Both a and b
Hint
82]. _______ techniques are used by a user to share the spectrum in an efficient way.
Multiple access technique
Frequently access techniques
Rarely access techniques
None of the above
Hint
83]. Wireless communication uses _______ method.
Multiplexing
Quantizing
Equalizing
None of the above
Hint
84]. Wireless communication uses ______ number of Multiplexing methods.
Hint
85]. Which of the following are multiplexing methods used in mobile communication?
TDMA
FDMA
CDMA
All the above
Hint
86]. In which spectrum available spectrum is divided and further these narrow bands are divided equally into time slots?
TDMA
FDMA
CDMA
All the above
Hint
87]. In North America, the digital cellular standard at IS 136 for each frequency channel is assigned with ______ frequency.
30 KHz
50 KHz
59 Hz
70 Hz
Hint
88]. _______ multiplexing technique allows user to share traffic channels.
TDMA
FDMA
CDMA
All the above
Hint
89]. The process where users share available spectrum in the frequency band is called _________.
Traffic channel
Congestion channel
Noise
Disturbance
Hint
90]. In which multiplexing technique, different users are assigned with the different channels.
TDMA
FDMA
CDMA
All the above
Hint
91]. _______ cellular systems use FDMA type system.
Digital
Analog
Both a and b
Discrete
Hint
92]. Which of the following is a multicellular transmission type technique?
Hint
93]. OFDMA stands for ________.
Orthogonal frequency division multiplexing
Original frequency division multiplexing
Orthogonal frequency derived multiplexing
Orthogonal frequency-division mutant
Hint
94]. OFDMA was introduced by _______.
Robert W
Williams
Richard
Charles
Hint
95]. OFDMA was introduced by Robert W in ________ year.
Hint
96]. Is OFDM a FDMA technique?
Hint
97]. OFDMA was incorporated into _______ standard.
Wireless network
Wired network
Cable network
All the above
Hint
98]. In OFDMA, data stream are carried by multiple _____ rate subcarrier type tones.
Hint
99]. Does OFDMA overcomes hostile frequency selective type fading?
Hint
100]. OFDMA combines benefits of ______ techniques.
Coherent detection
OFDM modulation
OFDM demodulation
Both a and b
Hint
101]. OFDM technique reduces electrical BW using ______.
Up-down conversion
Frequency conversion
Increasing frequency bandwidth
None of the above
Hint
102]. OFDM is suitable for _______ speed circuit design.
Hint
103]. OFDM uses _____ mathematical techniques for processing signal.
FFT
IFFT
DFT
Both a and b
Hint
104]. FFT stands for ________.
Fast Fourier Transform
Fast Forward Transform
Fast Fourier Turn
None of the above
Hint
105]. Which of the following are 1G mobile systems?
NMT 450
AMPS
TACS
All the above
Hint
106]. NMT 450 was released in _______ year.
Hint
107]. AMPS was released in _______ year.
Hint
108]. TACS was released in _______ year.
Hint
109]. NMT 900 was released in _______ year.
Hint
110]. In NMT 400 or 900, NMT stands for ______.
Nordic Mobile
Northern Mobile
Nordic Mic
None of the above
Hint
111]. TACS stands for ________.
Total Access Communication System
Total Allocate Communication System
Total Access Conduct System
None of the above
Hint
112]. Which of the following are the disadvantages of 1G?
Analog
Not robust
Incompatible standards
All the above
Hint
113]. Which of the following are the advantages of 2G?
Advanced modulation techniques
Reduce in overhead
Includes services such as SMS
All the above
Hint
114]. Which of the following are 2G technologies?
DAMPS
GSM
JDC
All the above
Hint
115]. DAMPS 2G technology stands for _______.
Digital Advanced Mobile Phone Systems
Digital Auto Mobile Phone Systems
Digital Advanced Mode Phone Systems
None of the above
Hint
116]. DAMPS 2G technology was used in _______ country.
North America
European
Japan
UK
Hint
117]. GSM 2G technology was used by ______.
North America
European
Japan
UK
Hint
118]. JDC 2G technology stands for ________.
Japanese Digital Cellular
Japanese Data Cellular
Japanese Digital Cite
None of the above
Hint
119]. JDC 2G technology is used by _______ country.
North America
European
Japan
UK
Hint
120]. CT-2 of 2G technology stands for ________.
Cordless Telephones-2
Cordless Telegraph-2
Cord Telephones-2
None of the above
Hint
Mobile Communication Important Questions for Interviews
121]. CT-2 of 2G technology is used in ________ country.
North America
European
Japan
UK
Hint
122]. GSM uses ________ number of frequency range.
Hint
123]. GSM is implemented using 4 frequency ranges and ______ number of multiplexing techniques.
Hint
124]. Which of the following are the multiplexing techniques used in GSM?
FDMA
TDMA
FDD
All the above
Hint
125]. Primary GSM uses uplink frequency in the range between _______.
890 to 915 MHz
935 to 960 MHz
880 to 915 MHz
925 to 960 MHz
Hint
126]. Primary GSM uses downlink frequency in the range between _______.
890 to 915 MHz
935 to 960 MHz
880 to 915 MHz
925 to 960 MHz
Hint
127]. Extended GSM uses uplink frequency in the range between _______.
890 to 915 MHz
935 to 960 MHz
880 to 915 MHz
925 to 960 MHz
Hint
128]. Extended GSM uses downlink frequency in the range between _______.
890 to 915 MHz
935 to 960 MHz
880 to 915 MHz
925 to 960 MHz
Hint
129]. GSM 1800 uses uplink frequency in the range between _______.
1710 to 1785 MHz
1805 to 1880 MHz
1850 to 1910 MHZ
1930 to 1990 MHZ
Hint
130]. GSM 1800 uses downlink frequency in the range between ________.
1710 to 1785 MHz
1805 to 1880 MHz
1850 to 1910 MHZ
1930 to 1990 MHZ
Hint
131]. GSM 1900 uses uplink frequency in the range between _______.
1710 to 1785 MHz
1805 to 1880 MHz
1850 to 1910 MHZ
1930 to 1990 MHZ
Hint
132]. GSM 1900 uses downlink frequency in the range between _______.
1710 to 1785 MHz
1805 to 1880 MHz
1850 to 1910 MHZ
1930 to 1990 MHZ
Hint
133]. The cellular approach in mobile radio is used when frequency resource is _______.
Limited
Zero
Maximum
Minimum
Hint
134]. A cellular network in which the sum of the area is divided into a smaller portion of are is called _______
Cells
Zone
Perimeter
Fence
Hint
135]. A cell can cover _______ number of mobile subscribers.
Multiple
Limited
Numerous
Zero
Hint
136]. Which of the following are the components of a cell?
Base station
RF channels
Transmitter and receiver
Both a and b
Hint
137]. Is the frequency within a cell is simultaneously utilized by other cells at a geographical distance?
Hint
138]. A 7 cell type pattern divides frequency resources into ______ number of parts.
Hint
139]. A cluster of cells where the available frequency spectrum is completely consumed is called ______.
Cluster of cells
Group cells
Cell site
None of the above
Hint
140]. If 2 cells have a similar number of adjacent clusters and use the same RF channel set then the channel is called _______.
Co-channel cell
Adjacent cell
Side-channel
Neighboring cell
Hint
141]. Which of the following are the properties of the cellular site?
Uses available RF efficiently
Mobile user can get an efficient signal within cell site
Zero disturbance
Both a and b
Hint
142]. A cell is available in which of the following shapes?
Hexagon
Square
Triangle
All the above
Hint
143]. A hexagon shape covers a specific area using ______ cells.
Hint
144]. A hexagonal cell has a minimum number of _______.
Base stations
Capital investments
Both a and b
Transmitter
Hint
145]. Can other shapes such as triangle, circle, or square type cell provide efficient coverage compared to hexagon cell shape?
Hint
146]. Do radio signals depend on environmental conditions?
Hint
147]. Which of the following is the reason behind radio signal dependency on the environment?
Separation between receiver and transmitter
Objects like trees, terrain, and buildings
Climatic changes
All the above
Hint
148]. The variation of signal attenuation with respect to different parameters is called ______.
Fading
Distortion
Disturbance
Noise
Hint
149]. Fading is a _________ process.
Random
Continuous
Discontinuous
None of the above
Hint
150]. Fading is of _______ types.
Hint
151]. Which of the following are the advantages of mobile communication?
Location-independent
Wireless communication
Operates at higher speed
All the above
Hint
152]. Which of the following are the disadvantages of mobile communication?
Workflow disruption
Requires effective monitoring
Security breach
All the above
Hint
153]. What is the value of RF signal propagation in free space?
Hint
154]. RF signal propagation constant with value 2 is applied for ______ systems.
Static radio
Dynamic radio
Both a and b
None of the above
Hint
155]. What is the range value of RF signal propagation constant in a mobile environment?
2 to 3
3 to 4
4 to 6
Both b and c
Hint
156]. LOS in mobile communication is abbreviated as ________.
Line Of Sight
Light of Sight
Linear Of Sight
Loss of Sight
Hint
157]. _______ propagation of RF waves occurs due to reflection of RF energy from obstacles.
Multipath
Unidirectional
Bi-directional
All the above
Hint
158]. Reflection of waves generally occurs from ________.
Walls
Hill
Objects
All the above
Hint
159]. Do reflected waves undergo phase change?
Hint
160]. At what degrees of phase do reflect waves cancel out each other?
Hint
Mobile Communication MCQs With Answers
161]. When a signal cancels out, does its signal strength reduce?
Hint
162]. Multipath propagation property in mobile communication leads to ________.
Inter symbol interface
Pulse widening
Both a and b
Signal discarding
Hint
163]. _______ type of fading in mobile communication is caused due to multipath reception.
Rayleigh fading
Shadow fading
Block fading
Selective fading
Hint
164]. ________ cause changes in the frequency of the received RF type signal.
Mobility of subscriber
Mobile phone usage
Turning of signal
All the above
Hint
165]. Which of the following are the counter techniques for solving frequency distortion of an RF signal?
Channel coding
Interleaving
Equalization
All the above
Hint
166]. Which of the following are the advantages of sectoring?
Decreases co-channel interference
Increases systems capacity
Increases noise
Both a and b
Hint
167]. Which of the following are the disadvantages of sectoring?
Requires more antennas
Reduces efficiency of trunking
Increases use of Hands offs
All the above
Hint
168]. Do mobile units when travels through a path cross different cells?
Hint
169]. Mobile unit traveling through different cells enters different frequency allows the control taken by ______.
Base stations
Antenna
Servers
All the above
Hint
170]. Mobile unit traveling through different cells enters different frequencies allows a base station to take control is defined as ______.
Hands off
Trucking
Interpolation
All the above
Hint
171]. Which of the following are the conditions for hand-off?
Signal received should be below threshold value
Interface ratio of a carrier should be below that 18dB
High power consumption
Both a and b
Hint
172]. Which of the following is the function of an imperfect filter?
Leaks frequencies into pass band
Adjacent channel interference
High power consumptions
Both a and b
Hint
173]. Which of the following are the countermeasures for an imperfect filter?
Isolating RF channel
Reducing distance
Improving SNR ration
All the above
Hint
174]. It is not possible to separate RF frequencies when the value of the reuse factor is ______.
Small
Large
Infinite
Zero
Hint
175]. _______ is used for accommodating multiple users within a limited radio spectrum.
Trunking
Fading
Multiplexing
Both a and b
Hint
176]. GOS in mobile communication stands for _______.
Grade of Service
Grade of Site
General out Sourcing
None of the above
Hint
177]. The condition where all the channels are engaged is called _______.
Grade of Service
Trunking
Fading
None of the above
Hint
178]. Cellular-based designers estimate _______ to allocate RF number of channels to meet GOS.
Cost
Capacity
SNR
All the above
Hint
179]. ________ is required to calculate GOS value.
ERLANG B table
LOG table
Anti Log Table
All the above
Hint
180]. The advantage of cell splitting is ________.
Improves capacity
Reduces transmission power
Adds noise
Both a and b
Hint
181]. GSM network in mobile communication has _______ number of systems.
Hint
182]. Which of the following are the GSM network systems?
Switching system
Mobile station
Base station system
Operation and maintenance center [OMC]
All the above
Hint
183]. Switching system is also named _______.
Network and Switching Systems
Networking systems
Service systems
All the above
Hint
184]. NSS in mobile networking systems is abbreviated as _________.
Network and Switching Systems
Networking Systems Switch
Network Software System
All the above
Hint
185]. Which of the following is the function of NSS?
Processes calls
Processes subscriber related functions
Deactivates network
Both a and b
Hint
186]. Which of the following are the functional units of NSS?
Mobile switching center
Visitor location register
Home location register
All the above
Hint
187]. Mobile switching center interfaces with ________ to operate.
PSTN
MSC
Other mobile switching centers
All the above
Hint
188]. Which of the following are the functions of MSC?
Handles location registration
Handles MSC-BSS signal protocol
Manages radio link during calls
All the above
Hint
189]. MSC is abbreviated as ________.
Mobile Switching Centers
Mobile Setup Centers
Movement Switching Centers
All the above
Hint
190]. Which of the following are the components of the home location register?
Contains IMSI
Services subscription information
Information on service restriction
All the above
Hint
191]. IMSI is abbreviated as ___________.
International Mobile Sub Identity
Internet Mobile Sub Identity
International Mobile Side Identity
None of the above
Hint
192]. HLR is abbreviated as __________.
Home Location Register
Hide Location Register
Home Location Relay
None of the above
Hint
193]. Visitor location register is integrated with ________.
MSC
HLR
ISDN
All the above
Hint
194]. Which of the following components does VLR comprise of?
Mobile sub identity
Temporary identity of mobile sub
ISDN mobile directory number
All the above
Hint
195]. IMEI stands for _________.
International Mobile Equipment Identity
Inter Mobile Equipment Identity
International Movable Equipment Identity
None of the above
Hint
196]. Authentication center is related to ________.
HLR
VLR
MSC
None of the above
Hint
197]. Authentication center provides _______ for each mobile subscriber.
Authentication keys [Ki]
Information
Messages
All the above
Hint
198]. The authentication key provided by the authentication center generates ______.
RAND
SRES
Cipher key
All the above
Hint
199]. Which of the following is the function of SRES in the authentication key?
Authenticates mobile
Authenticates IMSI
Secures messages
All the above
Hint
200]. Which of the following are the functions of the cipher key?
Encrypts communication
Transmits communication
Authenticates IMSI
All the above
Hint
201]. Which of the following are the functions of the operation and maintenance center?
Installs software
Manages traffic
Traces subscriber
All the above
Hint
202]. Which of the following are the components of a base station?
Base trans receiver station
Base station controller
Antenna
Both a and b
Hint
203]. Which of the following are the components of mobile stations?
SIM
Mobile equipment’s
Base station
Both a and b
Hint
204]. SIM is abbreviated as _________.
Subscriber Identity Module
Subscriber Idea Module
Subscriber Identity Mode
None of the above
Hint
205]. Which of the following are the functions of a base station?
Transmits and receives radio waves
Controls data flow
Manages mobility
All the above
Hint
206]. European GSM system categorizes mobile telephones into ______ number of units.
Hint
207]. Which of the following are other network elements of mobile communication?
SMS service centers
Voice mailbox
SMS flow
All the above
Hint
208]. Rayleigh fading is also called as ___________.
Macroscopic variation
Microscopic variation
Signal variation
None of the above
Hint
209]. Which of the following are the processes used while communicating information over radio link?
Coding
Modulation
Interference
Both a and b
Hint
210]. Which of the following is the process performed transmitter end in mobile communication?
Modulation
Coding
Demodulation
Both a and b
Hint