User's Manual

February 2003
Rev. A
Page 33 of 47
Example of Link Parameters:
P
t
= 18 dBm
C
t
= C
r
= 0 dB
G
t
= G
r
= 13.5 / 15.5 dBm
S
r
(11 Mbps) = 85 dBm, S
r
(5.5 Mbps) = 87 dBm, S
r
(2 Mbps) = 88 dBm
GM = 10 dB
(1)
ttt
GCPEIRP
+
−
=
(2)
rrrr
CGGMPLEIRPSP −+−−==
(3)
GMSCGEIRPPL
rrr
−
−
−
+
=
(4)
)log(20)log(204.32
KmMHz
RFPL
×
+
×
+
=
(5)
)log(20100
4.2 KmGHz
RPL
×
+
=
(6)
20
100
10
−
=
PL
Km
R
13.5 dBi Antenna 15.5 dBi Antenna
Rate=11 Mbps Rate=11 Mbps
P
t
18 18
C
t
0 0
G
t
13.5 15.5
EIRP
31.5 33.5
G
r
13.5 15.5
C
r
0 0
S
r
-82 -82
Pl
117 121
R
Km
7 11
Detailed results for RF calculation is given in Appendix C – Max RF Power and Distance
versus Antenna Gain