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Free Space Path Loss
Reduce the amplitude of the input signal by the amount specified
Library
RF Impairments
Description
The Free Space Path Loss block simulates the loss of signal power due to the distance between transmitter and receiver. The block reduces the amplitude of the input signal by an amount that is determined in either of two ways:
- By the Distance (km) and Frequency (MHz) parameters, if you specify Distance and Frequency in the Mode field
- By the Loss (dB) parameter, if you specify Decibels in the Mode field
The model shown in the following figure illustrates the effect of the Free Space Path Loss Block with the following parameter settings:
Mode is set to Distance and Frequency.
- Distance (km) is set to
0.5
- Frequency (MHz) is set to
180
Dialog Box
- Mode
- Method of specifying the amount by which the signal power is reduced. The choices are Decibels and Distance and Frequency.
- Loss
- The signal loss in decibels. This parameter is visible when you select Decibels in the Mode field.
- Distance
- Distance between transmitter and receiver in kilometers. This parameter is visible when you select Distance and Frequency in the Mode field.
- Carrier frequency (MHz)
- The carrier frequency in megahertz. This parameter is visible when you select Distance and Frequency in the Mode field.
See Also
Memoryless Nonlinearity
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