Chapter 2 Modules
T
ABLE
4 CC M
ODULE
P
ANEL
B
UTTON
D
ESCRIPTION
Printed
Button Name
Actual Functional Description
M/S
Master/Slave change-over button
RST
Reset button
Panel Interface
describes interfaces on the panel of CC module.
T
ABLE
5 CC M
ODULE
P
ANEL
I
NTERFACE
D
ESCRIPTION
Interface Name
Description
ETH0
GE/FE port connection between
BBU and BSC
ETH1
Debugging or local maintenance
EXT
Connecting the external receiver
(RS485, PP1S and 2M interfaces)
REF
Connecting GPS antenna
externally
TX/RX
Connecting the optical interface
between BBU and BSC
Channel Processing Module
(CH)
Function
module performs the following functions:
�
The forward modulation and reverse demodulation of base-
band
�
CDMA key technologies, such as diversity technique, RAKE
receiving, softer-handoff and power control
�
Mixed insertion of CHV and CHD modules to support 1x and
EV-DO service.
Principle
CHV module consists of processing unit, baseband modulation and
demodulation unit, FPGA unit, EPLD logic unit, power, Ethernet unit
and MMC unit.
shows the principle of CHV module.
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