Radio SDR: configurable software defined radio hardware transceiver Reicom Wireless products and technologies
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Radio SDR
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The increasing demand for high speed broadband radio access in high mobility environment with the additional need for interoperability between different radio communication standards pushed Reicom to adopting the Software Defined Radio (SDR) technology to satisfy these requests. Born for military application, the basic idea behind a SDR communication system is the possibility of reconfiguring via software a generic hardware platform composed by different programmable hardware devices, e.g. DSP and FPGA. In a SDR solution the hardware platform provides the functional blocks of a communication system, all configurable via software, including generation of the transmit signal (modulation and coding), medium access control (MAC), network management, routing and recovering of the received signal (synchronization, demodulation, equalization, decoding).

     
Radio SDR

 

Therefore, different communication standards can coexist aboard of the same radio with a simple reconfiguration of the hardware devices.

Key features of Reicom SDR transceiver:

  • Interoperability: different wireless communication standards, i.e. IEEE 802.11 a/b/g/n/p, coexist on the same hardware platform using different software modules;
  • Reconfigurability: all layers of the radio stack (e.g. physical layer, MAC, network layer and transport layer) can be reconfigured via software in few micro or milliseconds, depending at which level the reconfiguration takes place.
 

Reicom SDR radio platform, developed internally, is an extended range transceiver designed and optimized to host advanced Baseband platform for broadband connections of high speed vehicles (cars, buses, underground or high speed trains, etc…). It allows total control of the radio channel, from modulation to high frequency components, RF Front-End, RF amplifier, LNA and antenna .
Reicom SDR transceiver hosts the advanced digital HSBRA™ Baseband (High Speed Broadband Radio Access) which is the “core” of the physical layer of any Reicom radios up to the LLC (Logical Link Control). HSBRA™ enables Reicom SDR radio to hook the “network signal” in 94 µsec and make “hard handover” in 273 µsec at LLC level achieving 1 msec overall roaming time!

Besides the HSBRA™, others FPGA coded algorithms and IP give Reicom SDR transceiver the capability to instantaneously establish real and fully operative link with other transceivers and, after this, to keep this connection stable, time deterministic and highly resilient to the surrounding interferences phenomena (shadowing, fading, Doppler spread, etc..).

  Radio SDR
     

The spectrum used is the ISM band, fully compliant to the EN 300 328 and EN 301 893 (Broadband Data Transmission systems), EN 300 761 (Railways Radiosignalling), EN 302 571 (Intelligent Transport Systems and Road safety systems in the 5.9 GHz band), EN 300 674 (Road Transport and Traffic Telematics) up to EN 302 502 (Broadband Fixed Wireless Access).
This means no licensing or running cost, once remaining within the right power and duty cycle permitted at each individual frequency.

Reicom SDR platform can be remotely and wirelessly updated (OTA) in order to address or add new future communication standards or extra required features. This translates in lower hardware engineering costs, shorter time to market and most important, extended product longevity.

 
Radio SDR
     

Reicom SDR transceiver, besides the typical Wi-Fi, WiMAX and WAVE protocol stacks, supports Reicom novel and very advanced network and transport radio stacks, Clancast™ developed to provide high speed wireless connection in high mobility environments.
Clancast™ is a distributed hybrid MESH network protocol stack that guarantees fast network access and reconfiguration, in which each node decides the proper routing for its packets in autonomous way, regardless of the infrastructure. Examples of applications vary from vehicular networks (V2V & V2I) to subway train up to high speed trains that travel at more then 300 km/h inside a tunnel.

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RadioSDR
 
Multiple Data Rate: 3,6,8,9,12,16,18,24,27,32,48,54 Mbit/s.
Number of channels: 8 totally indipendent @ 2.4 GHz, more than 20 totally indipendent @ 5.4 - 5.8 GHz
Frequency: 2.4 GHz, 5.1 - 5.4 GHz, 5.4 - 5.8 GHz ISM band.
Power: 20 dBm (100mW), 23 dBm (200 mW) up to 30 dBm (1Watt).
Mobile communication range @
300 Km/h:
400-1000 m in NLOS up to 1.400 meter in LOS @ 2.4 GHz

800-1400 m in NLOS up to 2.000 meter in LOS @ 5.x GHz

Fixed communication range @
300 Km/h:
1.400 m @ 2.4 GHz

2.000 m @ 5.x GHz

 
SDR characteristics: half duplex, single omnidirectional antenna for above performances.
 
 
     
 
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