We supply and install state of the art modems by leading manufacturers such as Comtech that use technologically advanced components, innovative designs and proven, novel application software for superior performance.
Some of their features are:
1) Forward Error Correction (FEC) & Modulation The hub Modems support traditional and advanced methods of forward error correction to improve performance of error-prone channels.
SCPC The only way to ensure quality of voice and video service delivery.
DVB-S2 Provides near Shannon Limit performance over a wide operating range Low Density Parity Check Coding â€“ Enables near Shannon limit performance and additional coding gain.
Generation Turbo Product Coding Offers much lower delay than legacy FECs.
Selective Time Division Multiple Access slotted or free running Aloha channel assignment to minimize bandwidth on the return path for network clusters.
switched SCPC â€“ auto sensed from the packet headers, a dedicated SCPC channel will be allocated on demand for Voice or video traffic and for bulk of data greater than the STDMA assignment can manage. Switching is seamless with no interruption to service.
They also have ASIC and FPGA modulator and demodulator designs with a range of modulation techniques, including BPSK, QPSK, OQPSK, 8-PSK, 16-APSK, 32-APSK, 8-QAM, 16-QAM and 64-QAM. The combination of advanced FEC and higher order modulation provides increased coding gain, lower decoding delay, plus significant bandwidth and power savings.
2) DoubleTalk Carrier-in-Carrier This allows the transmit and receive carriers of a duplex link to share the same transponder space. When combined with the advanced FEC and modulation, DoubleTalk Carrier-in-Carrier delivers unprecedented savings in transponder bandwidth and power utilization. Therefore, this revolutionary technology can be successfully deployed in both bandwidth-limited and power-limited scenarios. In addition, this technology reduces earth station BUC/HPA power requirements allowing the use of a smaller BUC/HPA and/or antenna.
The Vipersat CDM-570/750 modems can transmit a carrier up to 10 Mbit/s (with 166 Mbits capability available using DVBS-2) which is received by all remote VSATs stations. Your specific VSAT terminal then extracts just the wanted data stream intended for it.