ADC Telecommunications Inc. F0684-112 사용자 설명서

6-35

CONFIDENTIAL

• e: enter the noise figure and gain of each system component (a, b, c, and d) into 

the standard cascaded noise figure formula

• h = e + f + g

• m = h + i + j –k – l

• r = n + o + p + q

• t = s – r – m

Fusion Wideband can be used to extend the coverage of the outdoor network by con-
necting to a roof-top donor antenna pointed toward an outdoor base station. Addi-
tional considerations for such an application of Fusion Wideband are: 

• Sizing the gain and output power requirements for a bi-directional amplifier 

(repeater).

• Ensuring that noise radiated on the uplink from the in-building system does not 

cause the outdoor base station to become desensitized to wireless handsets in the 
outdoor network.

• Filtering out signals that lie in adjacent frequency bands. For instance, if you are 

providing coverage for Cellular B-band operation it may be necessary to filter out 
the A, A’ and A” bands which may contain strong signals from other outdoor base 
stations.

Further information on these issues can be found in TE application notes for re-radia-
tion applications.

 = F

1

 +

+

+ ....

2

 – 1

1

3

 – 1

1

2

where

F = 10

(See Rappaport, Theodore S. Wireless Communications, Principles, and Practice. Prentice Hall PTR, 1996.)

(Noise Figure/10)

G = 10

(Gain/10)