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Mobile Computing & Communications: Introduction
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Mobile Computing & Communications: Introduction
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25 Questions

1. The processing gain of FH systems is given by ratio of _______
2. Why spread spectrum technique is inefficient for a single user?
3. Of the total channels present in the cellular system, what is the percentage of voice and control channels?
4. Why the size of the cell is kept small in cellular network?
5. The period of a PN sequence produced by a linear m stage shift register cannot exceed _____ symbols.
6. What is MIN?
7. What is the set of possible carrier frequencies in FH-SS?
8. The transmission bandwidth of spread spectrum techniques is equal to the minimum required signal bandwidth.
9. In fast frequency hopping, hopping rate is less than the information symbol rate.
10. What is transmitted along with the call initiation request during the origin of call by a mobile?
11. Which of the following is not a characteristic of cellular telephone system?
12. DSSS system spreads the baseband signal by ________ the baseband pulses with a pseudo noise sequence.
13. Who has the responsibility of billing and system maintenance function in cellular system?
14. What is handoff?
15. The process of transferring a mobile station from one base station to another is ____________
16. The bandwidth of the channel used in the hopset is called _________
17. Which of the following is not a property of spread spectrum techniques?
18. Which one is not an advantage of using frequency reuse?
19. Which two channels are responsible for initiating mobile calls?
20. PN sequence can be generated using sequential logic circuits.
21. What is the function of FVC (Forward Voice Channel)?
22. The interference between the neighbouring base stations is avoided by ____________
23. Which of the following is not a characteristic of PN sequence?
24. FH systems do not have collisions.
25. Frequency hopping involves a periodic change of transmission _______