QUIZ WC Link Budget design – Small scale fading

Which of the following is NOT a characteristic of small-scale fading?

• Affects signals over short distances
• Caused by multipath propagation
• Results in fast fluctuations in signal power
• Affects signals over long distances

Which type of fading occurs when there is a significant change in the amplitude of the signal?

• Rayleigh fading
• Path loss
• Shadowing
• Doppler fading

Which of the following is an accurate statement about the effect of small-scale fading on a signal?

• Increases signal strength and reduces noise
• Decreases signal strength and increases noise
• Causes no change in signal strength or noise
• Causes a predictable pattern of signal loss

What is the main cause of small-scale fading in wireless channels?

• Refraction
• Reflection
• Diffraction
• Multipath propagation

What is the difference between Rayleigh fading and Rician fading?

• Rayleigh fading occurs in urban environments only
• Rician fading occurs in rural environments only
• Rayleigh fading has a constant K-factor
• Rician fading has a line-of-sight component

How can diversity techniques be used to combat small-scale fading?

• By transmitting a signal at a higher power level
• By using multiple antennas at the transmitter
• By changing the modulation scheme
• By increasing the carrier frequency

In a flat fading channel, the coherence bandwidth is ____________.

• small compared to the signal bandwidth
• greater than the signal bandwidth
• equal to the signal bandwidth
• None of the above

In link budget design, what does the receiver sensitivity represent?

• Maximum allowable received power
• Minimum received power required for successful communication
• Maximum transmit power allowed
• None of the above

Which type of fading is caused by multi-path propagation?

• Rayleigh fading
• Rician fading
• Shadow fading
• Multipath fading

In a wireless communication system, if the transmitted power is increased by a factor of 4, the received power will increase by a factor of _________.

• 4
• 8
• 16
• 2