User's Manual

Link Budget Analysis
InterReach Fusion Wideband Installation, Operation, and Reference Manual Page 93
D-620616-0-20 Rev K • TECP-77-044 Issue 9 • March 2015 © 2015 TE Connectivity
• e: enter the noise figure and gain of each system component (a, b, c, and d) into the standard
cascaded noise figure formula
• i = f + e + g – h
• m = j + k + l
• p = n – m – i
The
refore, the system is downlink limited but the downlink and uplink a
re almost balanced,
which is a desirable condition.
Table 83.
Narrowband Link Budget Analysis: Uplink
Line Uplink
Receiver
a. BTS noise figure (dB) 4
b. Attenuation between BTS and Fusion Wideband (dB) –10
c. Fusion Wideband gain (dB) 0
d. Fusion Wideband noise figure (dB) 1-4-32 22
e. System noise figure (dB) 22.6
f. Thermal noise (dBm/30 kHz) –129
g. Required C/I ratio (dB) 12
h. Antenna gain (dBi) 3
i. Receive sensitivity (dBm)
–97.4
Airlink
j. Multipath fade margin (dB) 6
k. Log-normal fade margin with 9 dB std. deviation, 95% ar
ea
coverage, 87% edge coverage 10
l. Body loss (dB) 3
m. Airlink losses (not including facility path
loss)
19
Transmitter
n. Mobile transmit power (dBm)
28
p. Maximum path loss (dB) 106.4
F
sys
= F
1
+ + + ....
F
2
– 1
G
1
F
3
– 1
G
1
G
2
where
F = 10
(See Rappaport, Theodore S. Wireless Communications, Principles, and Practice. Prentice Hall PTR, 1996.)
(Noise Figure/10)
G = 10
(Gain/10)