SET-1
NOVA COLLEGE OF ENGINEERING AND TECHNOLOGYJAFFERGUDA, HAYATHNAGAR-R.R DISTRICT
DEPARTMENT OF
ELECTRONICS AND COMMUNICATION ENGINEERING
II-MID EXAMINATION
SUBJECT: CMC YEAR: IV/ I SEM
COURSE: B.TECH ECE DATE:02-12 -2011.
MARKS: 20 TIMINGS: 02.00 TO 04.00 PM.
I. Answer any FOUR of the following.
1. A). Explain the limitations of conventional mobile telephone system, with neat diagram?
B). Explain about NMT & NTT Systems.
2. A). Explain cell splitting both permanent and dynamic?
B).Explain the frequency reuse distance in cellular radio system.
3. Explain how co-channel interference is measured in real time mobile radio transceiver?
4. Concept of delaying a handoff, what are the advantages of delayed handoff
5. A). Write about forced handoff,
B). Definition of dropped call rate
What is the general formula of dropped call rate? Explain?
6. Explain in detail about GSM architecture
SET-2
NOVA COLLEGE OF ENGINEERING AND TECHNOLOGYJAFFERGUDA, HAYATHNAGAR-R.R DISTRICT
DEPARTMENT OF
ELECTRONICS AND COMMUNICATION ENGINEERING
II-MID EXAMINATION
SUBJECT: CMC YEAR: IV/ I SEM
COURSE: B.TECH ECE DATE: 02-12 -2011.
MARKS: 20 TIMINGS: 02.00 TO 04.00 PM.
I. Answer any FOUR of the following.
1. A) Draw the general view of telecommunication and explain the function of the each unit?
B). Explain about NMT & NTT Systems.
2. A) Explain about the marketing of hexagonal cells?
B) Explain the concept of frequency reuse channels.
3. A) Explain the hand-off mechanism.
B) Explain the cochannel interference reduction factor.
4. Explain the designing of an Omni directional antenna system in the worst case scenario.
5. A). What is Intersystem handoff?
B). Definition of dropped call rate
What is the general formula of dropped call rate? Explain?
6. Explain the architecture of TDMA?
SET-3
NOVA COLLEGE OF ENGINEERING AND TECHNOLOGYJAFFERGUDA, HAYATHNAGAR-R.R DISTRICT
DEPARTMENT OF
ELECTRONICS AND COMMUNICATION ENGINEERING
II-MID EXAMINATION
SUBJECT: CMC YEAR: IV/ I SEM
COURSE: B.TECH ECE DATE:02-12 -2011.
MARKS: 20 TIMINGS: 02.00 TO 04.00 PM.
I. Answer any FOUR of the following.
1. A). Explain about basic cellular system.
B). what are the different types of noises in cellular frequency ranges Explain in detail?
2. A). Derive the C/I for normal case in an Omni directional antenna system.
B). what is the need of splitting and explain the cell splitting.
3. Define cochannel interference. How is it measured at the mobile unit and cell site?
4. Concept of delaying a handoff, what are the advantages of delayed handoff?
5. A). Why hand off is necessary? Concept of delaying a handoff.
B). Definition of dropped call rate and consideration of dropped call rates.
6. Write short notes on,
(a) TDMA structure
(b) Frame length
(c) Frame offset
(d) Modulation timing.
SET-4
NOVA COLLEGE OF ENGINEERING AND TECHNOLOGYJAFFERGUDA, HAYATHNAGAR-R.R DISTRICT
DEPARTMENT OF
ELECTRONICS AND COMMUNICATION ENGINEERING
II-MID EXAMINATION
SUBJECT: CMC YEAR: IV/ I SEM
COURSE: B.TECH ECE DATE: 02-12 -2011.
MARKS: 20 TIMINGS: 02.00 TO 04.00 PM.
I. Answer any FOUR of the following.
1. A). Draw the general view of telecommunication and explain the function of the each unit?
B). Explain the phenomena of severe fading?
2. A). Explain cell splitting both permanent and dynamic?
B).Explain the frequency reuse distance in cellular radio system.
3. A) what is near-end-far-end interference ratio and explain its effects?
B) Write a note on power control.
4. Concept of delaying a handoff, what are the advantages of delayed handoff
5. A). Write about forced handoff,
B). Definition of dropped call rate
What is the general formula of dropped call rate? Explain?
6. Explain in detail about GSM architecture
