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   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 bit/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

3 – 2 pieces
Ethernet 10/100 Base T – 1 piece.

Maximum throughput of digital interface

3 – 51264 Kbit/=32768 Kbit/sec
Ethernet 10/100 Base T – 100 bit/sec

Duplexing method

Frequency duplex
frequency spacing – 500 Hz

Frequency range of radio-relay station (index mark SS in the identification code):
    central receiving frequency
    central transmit frequency


5152,5…5220,0 Hz
5652,5…5720,0 Hz

Frequency range of radio-relay station (index mark S in the identification code):
    central receiving frequency
    central transmit frequency


5652,5…5720,0 Hz
5152,5…5220,0 Hz

Frequency bandwidth

14 Hz

Number of active channels

28

Frequency spacing

2,5 Hz

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 bit/sec into output OFDM-signal with 70 Hz intermediate frequency and for inverse transformation of OFDM-signal into output digital stream.

Indoor service conditions:
     ambient air temperature
    relative humidity
    atmosphere pressure


+ 5 o … + 40 o
80 % (at temperature +25 o)
84 … 106,7 kPa (630 … 800 mm of mercury)

Power supply

minus 39 … minus 72 V

Measurements:
    of the faceplate
    of the body


43,8482,6 mm
41,6430223 mm

ass

not more than 3,2 kg

RADIO UNIT

    It is intended for conversion of input OFDM signal with 70 Hz 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 o … + 60 o
Up to 95 %
84 … 106,7 kPa (630 … 800 mm of mercury)

Power supply

minus 39 … minus 72 V

Measurements 
252240155 mm

ass

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.

 

New products

Time-schedule of workshops

Copyright

Copyright © 2012
Nizhny Novgorod Factory named after M.V. Frunze.
All rights reserved.
 
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