|
WiMax technology
 Radio-relay station (RRS) PURPOSE It is intended for wireless data transmission with the aim to provide communication services: Internet access, holding of videoconferences. POTENTIALITIES - Peak transfer rate – 72 Ìbit/sec.
- Maximum distance between neighbouring relay centers - 50 km
- Maximum number of relay centers – 32
ADVANTAGES Advanced OFDM-256 transfer technology ensures stable communication under conditions of artificial and natural noise. TECHNICAL DATA Quantity | Value | Transfer technology | OFDM-256 | Modulation types | BPSK, QPSKA, QAM-16, QAM-64 | Number of main stream input/output interfaces | Å3 – 2 pieces
Ethernet 10/100 Base T – 1 piece. | Maximum throughput of digital interface | Å3 – 512õ64 Kbit/ñ=32768 Kbit/sec
Ethernet 10/100 Base T – 100 Ìbit/sec | Duplexing method | Frequency duplex
frequency spacing – 500 ÌHz | Frequency range of radio-relay station (index mark SS in the identification code):
central receiving frequency
central transmit frequency |
5152,5…5220,0 ÌHz
5652,5…5720,0 ÌHz | Frequency range of radio-relay station (index mark ÑS in the identification code):
central receiving frequency
central transmit frequency |
5652,5…5720,0 ÌHz
5152,5…5220,0 ÌHz | Frequency bandwidth | 14 ÌHz | Number of active channels | 28 | Frequency spacing | 2,5 ÌHz | Maximum output power of the transmitter:
of the subset with high-power radio unit (index mark 0W5)
of the subset with low-power radio unit (index mark 0W01) |
300 MW
10 MW
| Redundancy schemes | 1+0, 1+1, 2+0 |
MODEM It is intended for conversion of input digital stream with the rate of up to 72 Ìbit/sec into output OFDM-signal with 70 ÌHz intermediate frequency and for inverse transformation of OFDM-signal into output digital stream. Indoor service conditions:
ambient air temperature
relative humidity
atmosphere pressure |
+ 5 oÑ … + 40 oÑ
80 % (at temperature +25 oÑ)
84 … 106,7 kPa (630 … 800 mm of mercury)
| Power supply | minus 39 … minus 72 V | Measurements:
of the faceplate
of the body |
43,8õ482,6 mm
41,6õ430õ223 mm
| Ìass | not more than 3,2 kg |
RADIO UNIT
It is intended for conversion of input OFDM signal with 70 ÌHz intermediate frequency into radio signal with 5,1 … 5,7 GHz frequency with the aim of amplifying HF signal and its posterior output through an antenna and inverse transformations. Indoor service conditions:
ambient air temperature
relative humidity
atmosphere pressure | on exposure to atmospheric condensation, hoarfrost, dew
- 40 oÑ … + 60 oÑ
Up to 95 %
84 … 106,7 kPa (630 … 800 mm of mercury) | Power supply | minus 39 … minus 72 V | | Measurements | 252õ240õ155 mm | Ìass | not more than 5,4 kg |
ANTENNAS
Modification:
for RF5.7/14 – G16, integrated, gain factor 16 dB;
for RF5.7/14 – G20, integrated, gain factor 20 dB;
for RF5.7/14 – G30, reflector antenna, remote, gain factor 30 dB.
Polarization – vertical. |
