Fundamental of Wireless Communications - Topic 2 - Part 1-4

What does frequency measure in terms of wave cycles?

• The number of peaks in a wave cycle

• The distance between two consecutive peaks

• The number of complete wave cycles occurring per second

• The height of the wave from its starting point to its peak

Which unit is used to measure frequency?

• Cycles per second

• Hertz (Hz)

• Megabytes (MB)

• Decibels (dB)

Which equation represents the Free Space Propagation Model?

• Friis free space equation

• Antenna gain equation

• Faraday's equation

• Path loss equation

In the Free Space Propagation Model, what does PL(dB) represent?

• Path Length

• Power Leakage

• Path Loss

• Power Level

What is typically used as a known received power reference point in the Free Space Propagation Model?

• Far-field distance

• Antenna gain

• Close-in distance (d0)

• Wavelength

In radio wave propagation, what is required for a transmitter and receiver to communicate in "line of sight (LOS)"?

• They must be within the same building.

• They must be able to hear each other clearly.

• They must have a direct, unobstructed view of each other.

• They must be in the same city.

In which scenario does diffraction occur in radio wave propagation?

• When the radio signals are reflected by a surface

• When the transmitter and receiver are in line of sight

• When the radio path is obstructed by sharp irregularities

• When the radio signals are scattered by small objects

What causes scattering to occur in radio wave propagation?

• Large obstacles blocking the line of sight

• Objects with dimensions smaller than the wavelength

• Frequency modulation of the radio signals

• Atmospheric interference

What is the purpose of performing a link budget analysis in wireless network design?

• To determine the optimal data rate

• To predict the path loss exponent

• To estimate the signal strength at the receiver

• To calculate the speed of transmission

What does the Hata Model provide a formulation for?

• Log-distance path loss in urban areas

• Signal strength prediction in rural environments

• Temperature variation in indoor settings

• Reflection and scattering phenomena