Most Recently Asked CDMA Multiple Choice Questions And Answers

31. Capacity is_____________proportional to the required Eb/Noof the system.
A. inversely
B. directly
C. square
D. none of the above
Ans: A

32. If a system requires 4 kHz of bandwidth to continuously send 8000 binary digits/sec, the bandwidth efficiency will be _______
A. 0.5 bits/s/Hz
B. 1 bits/s/Hz
C. 2 bits/s/Hz
D. 32 bits/s/Hz
Ans: C

33. The capacity of CDMA cell depends on
A. power control accuracy
B. interference power
C. Both 1 & 2
D. None of the above
Ans: C

34. ___________is considered when two cells (or sectors) of the same site are involved
A. Harder Handover
B. Softer Handover
C. No Handover
D. None of the above
Ans: B

35. The spreading bandwidth for the CDMA environment is 1.23 MHz. The voice activity factor is assumed to be _____________.
A. 1.375
B. 0.375(0.3 to 0.4)
C. 0.125
D. None of the above
Ans: B

36. Eb/No is the measure of __________________ for a digital communication system
A. signal to noise ratio
B. bit error ratio
C. spectral power
D. None of the above
Ans: A

37. Eb/No is measured at the _______________and is used as the basic measure of how strong the signal is.
A. output of the receiver
B. input to the receiver
C. input to the transmitter
D. output of the transmitter
Ans: B

38. What will be the path loss in dB for an open air site?
A. -8.27 dB
B. -80.27 dB
C. 80.27 dB
D. 8.27 dB
Ans: C

39. What will be the required transmitter power, in above example?(fade margin=30dB)
A. 25 mW
B. 55 mW
C. 110 mW
D. None of the above
Ans: B

40. What will be the required transmitter power, in above example?(fade margin=30dB)
a. 25 mW
b. 55 mW
c. 110 mW
d. None of the above
Ans: B

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