GSM-R/LTE-R Digital Pico Repeaters

As a common transportation, Railways transportation increases the carrying capacity, shortens the transportation time and decreases the transportation cost which improve the quality of transportation services, yield greater customer satisfaction, and help to create the socioeconomically balanced societies. And this highly efficient transport mode creates significant challenges in terms of investment, technology, industry, and environment.

To handle increasing traffic, ensure passenger safety, and provide real-time multi-media information, GSM-R communication system and more advanced LTE-R communication system is required. GSM-R is essentially the same system as the GSM but with railway-specific functionalities. The GSM-R network serves as a data carrier for the ETCS, which is the signaling system used for railway control. To provide improved and more efficient transmission for railway communication, LET-R has many advantages over GSM in terms of capacity and capabilities. LTE-R which is based LTE standard will replace GSM-R in the future.

HELIOS® GSM-R/LTE-R Digital Single Band Repeaters employ Software Defined Radio (SDR) technology based upon our FPGA & DSP Platform. This achieves high out of-band rejection and high intra-Carrier interference compared to traditional Analog IF SAW filters. It also enables on-the-fly filter change/upgrade by software without an expensive hardware upgrade.

KEY FEATURES

  • GSM-R and LTE-R Standards Compliant
  • SDR (Software Define Radio) technology based upon our FPGA & DSP (Digital Signal Processing) Platform
  • Supports upgrading filter parameters in case of frequency re-farming by software
  • SOC & embedded architecture enables delivery significantly improved network coverage with very low power consumption
  • Supports tunable sub-band or channelized filter design
  • Better out of band rejection than analog SAW filter
  • Built-in USB or RJ-45 interface for local control
  • Built-in automatic intelligent UL/DL Gain control
  • Light weight and compact size, flexible wall and pole mount.
  • RoHS Compliant

APPLICATIONS

To expandr Railway communication GSM-R/LTE-R signal coverage of fill signal blind area where signal is weak or unavailable or poor data throughput.

  • Indoor coverage: Train, Station, Offices, Parking lots, Tunnels and Elevators etc.

TECHNICAL SPECIFICATIONS

Frequency Range: 450MHz, 800MHz or 1800MHz (Customized)
Max Output Power: 20dBm
Filter Design: 1.4 MHz to 20MHz Tunable by Software (Bandwidth Customizable) @ Band Selective Mode
Max Gain: 70dB±2dB
Gain Adjustment: 0~30dB in 1dB steps
AGC: Min 25dB
Ripple in Band: Max ±2dB
Intermodulation: Complies with ETSI Standard
Spurious Emission: Max -36dBm @ 9KHz-1GHz, Max -30dBm @ 1-12.75GHz
RF Connector: N-type Female
I/O Impedance: 50 ohm
Uplink Noise Figure: Max 7dB @Max. Gain
Group Time Delay: <8μs
Temperature Range: -25℃ to +55℃
Relative Humidity: Max 95%
MTBF: Min. 100,000 hours
Power Supply: 230VAC 50Hz or 110VAC 60Hz or -48 VDC (Option)
Power Consumption: Max 20W
NMS Monitor Function: Real-time alarm for Temperature, Power Supply, Output Power, Gain, Uplink ATT, Downlink ATT, Channel Switch, PA Switch and etc.
Local Control: USB Port
Weather Resistance: IP43
Dimensions: 195mm * 130mm * 45mm
Weight: Max. 1.5KG
* Technical Specification subject to change without notice