Transcend
t
43™ Dual-Band DAS
DW-010-7373-09
Installation and Operation Manual -
Preliminary
Dali Wireless
Proprietary and Confidential
10
Rev: 0-2
Nov , 2011
0
2.2 System Description
The outdoor DAS is comprised of a
tHost
that is connected to the RF output of the base station, and multiple
t43™
remotes located in areas that the base station signal cannot reach (gaps created by natural or manmade
obstacles, tunnels and subways, or inside large buildings) as well as simulcast in a DAS configuration to provide
optimum coverage and capacity in wireless networks.
A Single optical fiber interface, based on the CPRI standard, is used to connect the
tHost™
with a number of
t43™
s, in a star, daisy-chain (see Figure 2-1), or hybrid star/daisy-chain configuration. The
t43™
s can be
installed 15km to 40km away from the
tHost™
. Both
tHost™
and
t43™
contain a digital processing section and an
RF processing section.
Figure 2-2 Dali DAS System Block Diagram
For bidirectional optical communication between
tHost™
and
t43™
s over single single-mode fiber cable, SFP
optical transceivers with built in wave division multiplexing (WDM) system are used. SFP modules are supporting
data rates from 2.5 Gbps to 6.144 Gbps (dependent on the version of the DAS).
All digital signal processing, framer/deframer, serializer/deserializer, digital down and up conversion (DDC and
DUC), crest factor reduction (CFR) and digital pre-distortion (DPD), is performed inside a Xilinx v6 FPGA.
t
43
SFP1
SFP2
Digital
Processing
Fiber R1
RF
Processing
1900MHz
RF
Processing
850MHz
AC-DC 110/220
to +27 VDC
110/220 VAC, 50/60 Hz
uP
Ethernet
RJ45
N
f
N
f
Tx/Rx ANT2
DL: 1930-1995 MHz
UL: 1850-1915 MHz
Tx/Rx ANT1
DL: 2110-2155 MHz
UL: 1710-1755 MHz
t
43
SFP1
SFP2
Digital
Processing
Fiber R2
RF
Processing
1900MHz
RF
Processing
850MHz
AC-DC 110/220
to +27 VDC
110/220 VAC, 50/60 Hz
uP
Ethernet
RJ45
N
f
N
f
BTS
AWS Band
BTS
PCS Band
tHost
Digital
Processing
RF
Processing
1900MHz
RF
Processing
850MHz
DC-DC -48VDC
to 5 VDC
uP
Ethernet
RJ45
N
f
SFP1
Fiber 1
N
f
-48 VDC (-72 to -36 VDC), or
SFP2
Fiber 2
SFP3
Fiber 3
SFP4
Fiber 4
SFP5
Fiber 5
SFP6
Fiber 6
5dB ATT
5dB ATT
Tx
BAND2
+38dBm
Tx
BAND1
+38dBm
Rx
BAND1
-90dBm
High Power 40dB ATT
High Power 40dB ATT
+42dBm
-80dBm
+42dBm
-80dBm
DL Gain: 49dB +1/-29 dB
UL Gain: 35dB +10/-20 dB
DL/UL ATT: 45 dB total
-7dBm
-7dBm
+42dBm
-80dBm
+42dBm
-80dBm
Router
E1
E2
Rx
BAND2
-90dBm
Tx/Rx ANT2
DL: 1930-1995 MHz
UL: 1850-1915 MHz
Tx/Rx ANT1
DL: 2110-2155 MHz
UL: 1710-1755 MHz
5dB ATT
-45dBm
5dB ATT
-45dBm
CommScope v. Dali Wireless
IPR2020-01409
DALI WIRELESS Exhibit 2004
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