Public Wireless Inc CM150D01 Manual Do Utilizador
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1. Introduction
1.1. General
The Public Wireless Fiber Fed DAS solution allows deployment of cellular coverage in areas
underserved by the current cellular network.
underserved by the current cellular network.
2. Network configuration of system
2.1. Network configuration
The Public Wireless Fiber Fed DAS solution conforms to the traditional analog fiber transport
DAS architecture, with central hub units (DUs) feeding RF signals over fiber links to CM150D
remote units (RUs).
DAS architecture, with central hub units (DUs) feeding RF signals over fiber links to CM150D
remote units (RUs).
z System configuration
System Connection: Single mode fiber optic cable between DU and RU
Optic Wavelength: 1310nm for FWD, 1550nm for RVS
Optic Wavelength: 1310nm for FWD, 1550nm for RVS
3. System Specifications
3.1. System specifications
3.1.1. Frequency allocation
3.1.2. System Specifications
Specification
Item
WCDMA
GSM
Remarks
Downlink (Tx)
870 - 890 MHz
869 - 891.4 MHz
cf. 3.2.1
Uplink (Rx)
825 – 845 MHz
824 – 846.4
Frequency
Stability
0.01PPM
System Delay
5usec max.
Tx-Rx Isolation
100dB min.
Impedance
50 Ohm
RU DL Output
Power
37 dBm composite
37 dBm composite
System Gain
72dB
60dB
FWD Spurious
3GPP, FCC compliant
3GPP, FCC compliant
RVS Noise
Figure
7dB max.
7dB max.
EVM or Rho
12.5%
Gain Control
Range
RU: 20dB by 1dB Step
RU: 20dB by 1dB Step
VSWR
1.5: 1 max.
1.5: 1 max.