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oDAS RADIUS application

The Outdoor Distributed Antenna System RADIUS is intended to provide celullar coverage along railways, roads and rural areas. The system allows increasing network capacity efficiency.

The oDAS RADIUS is designed for integration with LTE FDD, UMTS, GSM (GSM-R) networks, and provides serial distribution of a base station (BTS) sectors (frequency bands) reducing infrastructure cost (CAPEX/OPEX).

oDAS RADIUS modules

  1. The FSC is designed to convert several LTE, UMTS, and GSM (GSM-R) carriers from BTS's into the oDAS system signals.
  2. The FSR is designed to receive the carriers via MWL or fiber optic and convert them back to cellular signals providing remote sectors similar to that of the BTS.
  3. The RM provides operation of integrated microwave link.
  4. The SM provides creation of additional BTS sectors at a remote site equipped with the FSR module.

oDAS RADIUS features

  • reducing of construction costs for GSM-R, 4G (LTE), 3G (UMTS), and 2G (GSM) networks
  • reducing of operation costs: power consumption of the system is up to 5 times lower than that of typical base station
  • extension of a base station coverage area to 60 km
  • combination of intersystem data transfer channels: fiber optic and integrated microwave link (MWL):
    • the MWL operating distance is up to 20 km (within LOS)
    • the fiber optic operating distance is up to 60 km (out of LOS)
  • support of Internet of Things (IoT) services: In-Band NB-IoT
  • system modules operation via built-in remote control equipment

oDAS RADIUS configuration

oDAS RADIUS configuration

The RADIUS FSC is installed at the site with a base station (BTS — RRH or RSU) and receives the GSM-R, GSM, LTE, UMTS carriers from it. Then the module converts them and transmits via MWL or to fiber optic over a distance.

The RADIUS FSR is installed at the remote site. It receives the carriers using MWL or fiber optic and provides creation of remote sectors similar to that of the BTS (one carrier in each sector). In addition, it amplifies and transmits the received signals further along the line to the next site equipped with RADIUS products.

The SM module is designed to generate additional sectors at the site equipped with the FSR, and to provide MIMO technology as well.




  • Certificate of compliance with requirements to base stations and repeaters application  No. ОС-2-СПС-1052 (issued by: Certification Body for Telecommunication and Electro-Technical Products (Moscow)

Retrans­mission channel type — micro­wave link (MWL)
— fiber optic (FO)
Frequency band, MHz:
— GSM (GSM-R) 873—915 — UL
918—960 — DL
— UMTS UMTS Band 1:
1920—1980 — UL
2110—2170 — DL
— LTE LTE Band 3:
1710—1785 — UL
1805—1880 — DL
— micro­wave link 6425—7110
Transmitters output power, dBm:
— GSM(GSM-R)/LTE/UMTS (per carrier) 40—43 (max power)
— micro­wave link (total) 23 (configurable)
Main combina­tions of retrans­mitted GSM (GSM-R)/ LTE/ UMTS carriers — one LTE 20 carrier
— up to two LTE 10 carriers (one MIMO LTE 10 carrier)
— up to four GSM (GSM-R) / LTE 5/ UMTS 5/ NB-IoT 180 carriers (two MIMO LTE 5 carriers)
Number of carriers for one GSM (GSM-R)/ UMTS/ LTE trans­ceiver in FSR unit 1
Number of GSM (GSM-R)/LTE/UMTS trans­ceivers per FSR unit 2 (4 optionally — 2 additional external trans­ceivers SM modules can be connected for UMTS/LTE only)
Number of FSC inputs/ outputs for receipt of GSM (GSM-R)/ LTE/ UMTS carriers from BTS 4 (various combinations of UMTS/ LTE/ GSM (GSM-R) are available optionally — one carrier per each input/ output)
Optical trans­ceivers connector type SFP+
Number of optical connectors in FSR/FSC units 2
Optical connection types serial connection, parallel connection
Number of hops (MWL) — up to 2 (LTE, LTE/ UMTS, LTE/ UMTS/ GSM)
— up to 3 (GSM (GSM-R), UMTS)
Number of hops (fiber optic) 4 and more (depends on the distance between FSC and last FSR in a oDAS chain)
Parasitic noise level intro­duced by the system to integrated MWL, dB ≤ 3 (for maximum number of hops)
Delay, µs 6 (FSR/FSC)
Operating tempera­ture range, °С minus 40…+55
Power consumption (with two internal trans­ceivers in FSR unit with 40 dBm output power each), W — up to 200 (FSR + 2 RM)
— up to 290 (FSR + 2RM + 2SM)
— up to 65 (FSC +1 RM)
— up to 140 (FSR)
— up to 230 (FSR + 2 SM)
— up to 35 (FSC)
Housing protection rating  IP 65
Dimensions (WхDхH), mm:
— FSR1 408.3x282.1x210.1
— FSC 408.3х282.1х210.1
— RM 212х128х96
— SM 285х152х73
Power supply ~220/110 VAC or -48 VDC (optionally)
Weight (with two internal transceivers in FSR unit without fasteners), kg:
— FSR1 14.5
— FSC 12
— RM 2.4
— SM 2.8
Certification   ETSI TS 125 106
ETSI TS 136 106
ETSI TS 145 005
ITU-R F.384-11 (03/2012)
Control and monitoring  — local (Ethernet, Wi-Fi)
— remote (integrated GSM/ UMTS/ LTE modem)

About Manufacturer

Sergey Nevyantsev

Sergey Nevyantsev
Deputy CEO — Business Development Director

+7 3412 500 505
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