Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–VI • EXAMINATION – SUMMER 2013
Subject Code: 361101 Date: 09/05/2013
Subject Name: Mobile Communication
Time: 10:30 am TO 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.
Q.1 (a) 1. Explain concepts of Cellular structure and frequency reuse
concept.
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2. Write the full form of following:
(1) VGCS (2) EFR (3)GCR (4) RSSI
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(b) Discuss the following topic in short:
1. Mobile switching center
03
2. visiting location register
02
3. Base station controller
02
Q.2
(a) Explain with Diagram Mobile call termination in GSM
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(b) Explain 4-QPSK modulation technique in detail.
07
OR
(b) Explain IMSI, IMEI and EIR for GSM structure.
07
Q.3
(a) Explain Walsh code in CDMA.
07
(b) Explain concept of Time Hopping spread spectrum in CDMA. 07
OR
Q.3 (a) Explain with Diagram of Direct sequence Spread Spectrum(DS-SS). 07
(b) What is spread spectrum system ? Explain Criteria, Advantage, and
Disadvantage of spread spectrum system.
07
Q.4
(a) Draw block Diagram of mobile handset and explain each block of it.
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(b) Discuss about SIM card. Also write about each pin of SIM card.
07
OR
Q. 4 (a) List and discuss the general fault and fault finding for mobile
handset.(any 14 only )
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(b) Explain charging control section of mobile handset with diagram.
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Q.5
(a) Define Mobile computing. Discuss Technical and other limitation
of Mobile computing.
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(b) Discuss the major research issue for smart Antennas.
07
OR
Q.5 (a) Discuss What 4G technology is. List four step to implement 4G and
problem associated with implementation.
07
(b) 1. Explain GPRS system.
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2. Write short note on smart phone.
Seat No.: ________ Enrolment No.______________
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGG.- VIth SEMESTER–EXAMINATION – MAY/JUNE- 2012
Subject code: 361101/2361101 Date: 26/05/2012
Subject Name: Mobile Communication
Time: 10:30 am – 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic
Q.1 (a) List different types of cells used in cellular mobile system and
explain any one.
(b) Explain different hand-off strategies used in GSM.
Q.2
(a) Explain frame structure for GSM mobile system
(b) Explain QPSK modulation technique in detail.
OR
(b) Explain GMSK modulation technique in detail.
Q.3
(a) What is spread spectrum technology? Give Application and
advantages of it.
(b) Draw and explain block diagram of direct sequence spread spectrum
technique.
OR
Q.3 (a) Explain various features of CDMA technology.
(b) Explain hand-off in CDMA technology.
Q.4
(a) Write short note on WCDMA technology.
(b) Write short note on Bluetooth.
OR
Q. 4 (a) Write short note on GPRS.
(b) Write short note on smart antenna.
Q.5
(a) Draw and explain general block diagram of general cell phone.
(b) Explain different types of batteries used in cell phone.
OR
Q.5 (a) Draw and explain general block diagram of base band station of
cellular mobile system.
(b) Draw and explain general block diagram of RF section of mobile
handset.
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Seat No.: __________ Enrolment No._____________
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering Semester –VI Examination Dec. - 2011
Subject code: 361101 Date: 05/12/2011
Subject Name: Mobile Communication
Time: 02.30 pm – 05.00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered Authentic.
Q.1 (a) Explain concepts of Cellular structure and advantages of cellular
structure. Discuss different type of cells
07
(b) Discuss advantages of CDMA technology.
07
Q.2
(a) Explain architecture of GSM network with the help of block
diagram indicating main subsystems and its components.
07
(b) Write short note on Mobile Assisted Hand over(MAHO).
07
OR
(b) Explain call flow sequence in GSM when mobile originates the call
to the landline telephone.
07
Q.3
(a) What is spread spectrum and what are criteria for it. Discuss
applications of spread spectrum system.
07
(b) Explain necessity of power control in CDMA. Discuss forward link
power control.
07
OR
Q.3 (a) Explain call processing in CDMA mobile.
07
(b) Explain EDGE technology.
07
Q.4
(a) Draw and explain general block diagram of cell phone.
07
(b) Explain basic architecture of SIM card and its connecting diagram.
What is SIM lock ?
07
OR
Q. 4 (a) Explain basic AT commands used for fault finding is GSM handset. 07
(b) Explain concept of cell splitting & sectoring, why it is necessary.
07
Q.5
(a) Compare CDMA and GSM technology.
07
(b) Explain interleaving technique used in GSM control channel.
07
OR
Q.5 (a) Explain multiple access schemes used in GSM mobile with the help
of block diagram indicating bit rate at various point.
07
(b) Write short note on ‘WCDMA”
07
Seat No.: _____ Enrolment No.______
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma - Semester-VI- Regular Examination May 2011
Subject code: 361101
Subject Name: Mobile Communication
Date:16/05/2011 Time : 02.30 p.m. – 05.00 p.m.
Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is Authentic.
Q.1 (a) Write Short note on Hand Off.
07
(b) Write GSM Specifications.
07
Q.2
(a) Explain GSM Traffic Channels.
07
(b) Explain Signal Processing in GSM.
07
OR
(b) Explain Call Procedure for Mobile to Land line call.
07
Q.3
(a) Discuss applications of Spread spectrum Technique.
07
(b) What is PN Code? With diagram explain generation of PN codes. 07
OR
Q.3 (a) Explain DSSS system with figure.
07
(b) Write short note on Channel Capacity in CDMA System.
07
Q.4
(a) Draw & explain general block diagram of Cell phone.
07
(b) Explain general faults & faults finding procedure for mobile handset. 07
OR
Q. 4 (a) Draw & explain block diagram of RF section.
07
(b) Explain different types of batteries. Discuss talk time & stand by
time.
07
Q.5
(a) Write short note on blue tooth.
07
(b) Write short note on GPRS.
07
OR
Q.5 (a) Explain frequency reuse. Explain co-channel & adjacent channel
interference.
07
(b) Write short note on various OS of mobile.
07
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING - SEMESTER–VI • REMEDIAL EXAMINATION – WINTER 2013
Subject Code: 361101 Date: 12-09-2013
Subject Name: Mobile Communication
Time: 03:00 pm - 05:30 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.
Q.1 (a) Explain architecture of GSM network with the help of block diagram
indicating main subsystems and its components.
(b) Explain concepts of frequency reuse in Cellular structure. Discuss different
type of cells.
Q.2 (a) Explain different hand-off strategies used in GSM.
(b) List various cellular services. Explain SMS and MMS in detail.
OR
(b) Explain call flow sequence in GSM when mobile originates the call to the
landline telephone.
Q.3 (a) Discuss advantages of CDMA technology.
(b) Draw and explain general block diagram of general cell phone.
OR
Q.3 (a) Explain hand-off in CDMA technology.
(b) Explain different types of batteries. Discuss talk time & stand by time.
Q.4 (a) Explain necessity of power control in CDMA. Discuss forward link power
control.
(b) Explain general faults & faults finding procedure for mobile handset.
OR
Q. 4 (a) Explain basic architecture of SIM card and its connecting diagram.
What is SIM lock?
(b) Explain frame structure for GSM mobile system.
Q.5 (a) Write short note on GPRS.
(b) Write short note on smart antenna.
OR
Q.5 (a) Write short note on Bluetooth.
(b) Write short note on various Operating Systems of mobile.
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