From: Probabilistic framework for opportunistic spectrum management in cognitive ad hoc networks
Parameter | Definition |
---|---|
n | Propagation path loss exponent |
d c | Distance beyond which the interference is negligible (i.e., below the receiver sensitivity) |
λ (i) | Operating wavelength of the i th PRN |
| Transmit antenna gain of the i th PRN |
| Receive antenna gain of the i th PRN |
| Close-in distance of the i th PRN |
| Reference power at the close-in distance of the i th PRN |
α i | Activity factor of the i th PRN |
ρ i | User density of the i th PRN |
ρ SU | User density of the CRN |
| Power mask of the i th PRN |
| Maximum SU power to be used over the i th spectrum |
| Maximum SU rate to be used over the i th spectrum |
| Second highest SU rate to be used over the i th spectrum |
R 1 | Minimum SU rate |
erfc(·) | Complementary error function [20] |