Pathloss Simulation

Pathloss

Instructions

To understand the effect of various parameters on pathloss, please follow the following steps:

Enter the Antenna gain G, Carrier frequency f_c, Height of the transmitter H_t, Height of the receiver H_r.

Start adjusting the position of the receiver by moving the slider.

Click on register to plot the pathloss at the given distance.

You can register pathloss for different distances and heights of antenna and observe the graph to understand the pathloss trends.

G (dB)

f_c (150-1500 MHz)

H_t (30-1000 meters)

H_r (1-10 meters)

Adjust Receiver Position (1-100 km)

Observations

0 m

Distance

0 dB

Path Loss

shadowing

Instructions

To understand the effect of obstacles on the signal power, follow the following steps:

Imagine that there is a transmitter located at the center of the simulation area.

Place obstacles: To begin, click on any location within the simulation area. By clicking, an obstacle will be generated at the selected location.

After placing an obstacle, you will notice that the area behind the obstacle becomes reddish. This color change represents the decrease in signal strength due to the obstruction. The reddish areas indicate regions where the signal coverage is weak, meaning the radio waves are blocked or reflected by the obstacle, causing shadowing.

As you place more obstacles throughout the simulation area, you will notice that the blue areas become smaller and the red areas expand. This indicates that the signal coverage is being increasingly degraded as more obstacles are introduced.

G (dB)

f_c (in MHz)

H_t (meters)

H_r (meters)

Adjust Receiver Position

Observations

Registered Values

Distance (km)	Path Loss (dB)

Pathloss and Shadowing

Instructions

To understand the effect of obstacles on the signal power, follow the following steps:

Imagine that there is a transmitter located at the center of the simulation area.

Place obstacles: To begin, click on any location within the simulation area. By clicking, an obstacle will be generated at the selected location.

After placing an obstacle, you will notice that the area behind the obstacle becomes reddish. This color change represents the decrease in signal strength due to the obstruction. The reddish areas indicate regions where the signal coverage is weak, meaning the radio waves are blocked or reflected by the obstacle, causing shadowing.

As you place more obstacles throughout the simulation area, you will notice that the blue areas become smaller and the red areas expand. This indicates that the signal coverage is being increasingly degraded as more obstacles are introduced.

Control Panel

System Parameters

Pathloss at Reference Distance (K, dB)

Pathloss Exponent (γ)

Reference Distance (d₀, km)

Obstacle Density (per km²)

Receiver Position

Distance from Transmitter (km) 2.50

Receiver Angle (degrees) 0

Data Recording

Recorded Points: 0 / 50

Simulation

Transmitter

Receiver

Obstacle

LoS Signal

Occluded

Signal Status: Line of Sight

Total Pathloss: 0 dB

Pr/Pt at Receiver: 0 dB

Results

Record at least one data point to generate the analysis graph