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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