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Table 1 Variable definitions for link budget equations.

From: Minimizing Detection Probability Routing in Ad Hoc Networks Using Directional Antennas

Symbol Meaning Value Units
Transmitter power level dBW
Transmit antenna gain in the direction of the hostile antenna Figure 3 dB
Radio frequency 2500 MHz
Distance between the transmitter and hostile node Calculated M
Receiver antenna gain in the direction of the transmit antenna 0 dB
Total received signal level after receive antenna Equation (2) dBW
BW Hostile receiver's Bandwidth 1000000 Hertz
Noise temperature of hostile antenna 500 Degrees Kelvin
Environment noise temperature at hostile antenna 300 Degrees Kelvin
Total system noise temperature at hostile antenna Degrees Kelvin
Total noise level in signal bandwidth at hostile antenna Equation (3) dB Watts