User's Manual

CrossFire HP – All-Digital Transport System
User Guide
© SUNWAVE COMMUNICATIONS LIMITED 2015 15 Revision 05
1. System Overview
1.1. Overview
The CrossFire system includes the Access Unit (AU), Expansion Unit (EU) and Remote Unit (RU).
Using digital processing and digital optical transmission technology, the AU frames radio-frequency signals from base
stations of different operators, and of different standards and frequency bands, and transmits the composite signal to
the EU. WLAN and small cell base station signals access the gigabit/megabit Ethernet port on the EU and are reframed
with optical signals from the AU and then transmitted to the RU. The RU conducts digital-analog conversion and power
amplification of the input signals and then achieves radio coverage through the antenna-feeder system for signals of all
standards and frequency bands.
1.2. Product model
AU: iDAS-A202, EU: iDAS-E202, RU: iDAS-R211
1.3. Operating Fundamentals
Figure 1-1 shows the fundamentals of how the CrossFire operates.
AU
IPM
CAT-5
Fiber
IPM
DCM
WCDMA
WCDMA
WCDMA
BTS
DCM
FDD LTE
BTS
DCM
UCM
TDD LTE
TDD LTE
BTS
TDD LTE
DCM
UCM
TDD LTE
TDD LTE
MIMO
EU
WLAN
WCDMA
WCDMA
FDD LTE
FDD LTE
RU1
CAT-5
AP
POI
MIMO
UCM
UCM
UCM
UCM
UCM
DCM
IPM
UCM
TDD LTE
TDD LTE
UCM
TDD LTE
TDD LTE
Fiber
DCM
DCM
IPM
RU2
Fiber
FDD LTE
FDD LTE
Figure 1-1 CrossFire Operating Fundamentals