RF Link Budget Link Budget Calculator

TRANSMIT POWER

Select Unit of Transmit Power

Enter Value

SIGNAL RATES
NOISE POWER

Select thermal noise calculation method

If NF method, select units

Select Units of Io/No

RECEIVER SENSITIVITY

Select Parameter to Be Used

ANTENNA GAIN

Select reference antenna

Select units

Enter antenna gains:

TRANSMISSION (CABLE) LOSSES
PROPAGATION - HATA MODEL

Select Mode of Transmit Power Entry

MARGINS

Select fading mode

RECEIVER LOSSES
Summary

Summary

 Transmit power 33.0 dBm
+Gains 11.0 dB
-Losses 127.9 dB
=Received power -83.9 dBm
-Noise + interference power -100.0 dBm
=Median received SNR 16.1 dB
+Processing gain 24.1 dB
=Median received EbNo 40.2 dB
-Required EbNo 7.2 dB
=Excess 33.0 dB
-Margin 11.5 dB
=SURPLUS 21.5 dB
 
 Desired link reliability 90 %
 Effective link reliability 100 %
 Specified link distance 1.500 km
 Distance for desired reliability 5.781 km
 Reliability mode shadowing and fading

Options

FOR A POSITIVE SURPLUS, you can

-decrease the trasmitter power
-use less directive antennas or a cheaper receiver
-use lower antennas or a longer link distance

FOR A NEGATIVE SURPLUS, you can

-increase the transmitter power
-use more directive antennas or a better receiver
-use higher antennas or a shorter link distance