Ovrrbu-bts. Pdf
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- Điều hướng trang này:
- AirLink 8000 1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 36 1.17.5.3 Antennas
- 1.17.5.4 Transceivers
- 1.17.5.5 Radio Base Unit
| 1.17.5.2 Radio Base Unit (RBU)
DSCO Interface One to four E1 connections. The E1 signals can be relayed to accommodate remote RBUs. Antenna Coaxial cables of up to 100 meters connect the antennas. For space diversity, up to two antennas can be connected. Power Input 48 VDC, or 60 VDC. Customer Premises Equipment Telephone Interface One to eight telephone lines with independent telephone numbers using standard tip and ring signaling. Pay Phone One or two pay phones. X.21 Data Interface One or two standard DB15 connector. Power Input Universal AC Input. AirLink 8000 1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 36 1.17.5.3 Antennas RBU Transmit and Receive Gain 8 dBi, max. Optional sectored antennas with increased gain. SU Transmit and Receive Gain 18 dBi, max. Polarization Right Hand/Left Hand Circularly Polarized (RHCP/LHCP). 1.17.5.4 Transceivers RBU Power Amplifier Output +35 dBm nominal. SU Power Amplifier Output +14 dBm nominal. Modulation Quadriphase shift key (QPSK) data modulation with BPSK spreading. Demodulation Coherent. User Data Rate per SU Variable in real time to support single, dual and Quad line configurations. 32 kbps, 64 kbps, 96 kbps, 128 kbps. Bit Error Rate (BER) < 10-6. Receiver Sensitivity -114 dBm. System Sensitivity -111 dBm (Includes the effects of multi user interference) Power Control Reverse channel, 40 dB range. 1.17.5.5 Radio Base Unit Reliability 25 years mean time to hardware stop (MTTHS). Redundancy Option for N+1 redundancy on all major components to ensure continued operation in the presence of a failure. Space Diversity Option A second antenna can be added to improve performance in a multipath environment through space diversity, when required. Maintainability All circuit cards are replaceable without interrupting system operation and with power on (Hot Swappable). Operating Environment -10 to +55 C, Indoor. Size One standard rack, 483 mm (19”) wide, 1300 mm high (27u), 450 mm deep. Cooling Forced air cooled. tải về 0.71 Mb. Chia sẻ với bạn bè của bạn:
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