Q.1
Small scale fading describes the _________ fluctuations of the amplitude, phases of a signal.
  • a) Rapid
  • b) Slow
  • c) Instantaneous
  • d) Different
Q.2
Fading is caused by interference.
  • a) True
  • b) False
Q.3
Which of the following is not an effect caused by multipath in radio channel?
  • a) Rapid changes in signal strength
  • b) Random frequency modulation
  • c) Power of base station
  • d) Time dispersion
Q.4
In urban areas, fading occurs due to height of mobile antenna ________ than height of surrounding structure.
  • a) Same
  • b) Smaller
  • c) Greater
  • d) Very larger
Q.5
Fading does not occur when mobile receiver is stationary.
  • a) True
  • b) False
Q.6
Apparent shift in frequency in multipath wave is caused due to relative motion between________
  • a) Base station and MSC
  • b) Mobile and surrounding objects
  • c) Mobile and MSC
  • d) Mobile and base station
Q.7
Doppler shift is directly proportional to __________
  • a) Velocity
  • b) Height of antenna
  • c) Power of receiving antenna
  • d) Power of transmitter
Q.8
Which of the following factor does not influence small scale fading?
  • a) Multipath propagation
  • b) Power density of base station
  • c) Speed of mobile
  • d) Speed of surrounding objects
Q.9
Signal will distort if transmitted signal bandwidth is greater than bandwidth of __________
  • a) Receiver
  • b) Radio channel
  • c) Multipath channel
  • d) Transceiver
Q.10
What is a measure of the maximum frequency difference for which signals are strongly correlated in amplitude?
  • a) Coherence bandwidth
  • b) Narrow bandwidth
  • c) Incoherent bandwidth
  • d) Wide bandwidth
Q.11
The Doppler shift for mobile moving with constant velocity, v is given by _______
  • a) (v*cos θ)/λ
  • b) v/λ
  • c) v*cos θ
  • d) v*λ
Q.12
Doppler shift is positive if mobile is moving away from direction of arrival of the wave.
  • a) True
  • b) False
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