HN Outroute Cancellation Module |
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Significant bandwidth cost savings through frequency reuse
The HN Outroute Cancellation Module (OCM) is a Hughes Network Systems patented technology that enables service providers to maximize their spectral efficiency—thereby yielding significant savings in space segment costs.
The HN OCM is based on an overlay system (in Ku- or C-band) whereby the outroute and inroute traffic share the same frequency spectrum. Advanced signal processing is used at the hub to cancel the overlaid outroute signal, leaving the inroute signal to be cleanly demodulated.
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Key Features
Works with full or partial transponders
Transparent to type of modulation or coding
User-friendly GUI with multiple configurable parameters
Remote monitoring capability complete with alarms and logs
The HN system with the OCM feature supports the full suite of HughesNet® services, including advanced features such as Inbound Quality of Service (IQoS) for guaranteed inbound bandwidth, and is compliant with the DVB-S standard for outroute transmission.
The HN OCM with its advanced frequency reuse scheme is the ideal solution for service providers or enterprises looking to further improve network operating efficiency while lowering operating costs.
The HN OCM is yet another example of HUGHES®' commitment to providing its customers with a highly efficient satellite platform to deliver the widest range of broadband applications and services.
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Architecture Overview
Outroute cancellation is achieved by reconstructing the outroute signal and then subtracting it from the composite received signal. Remote terminals using the OCM feature are required to operate in TurboCode mode, which enables inroutes to recover power and bandwidth margins, allowing them to share the same outroute bandwidth.
Additional Features & Benefits
- Automatic frequency tracking and acquisition
- Adaptive equalization for satellite group delay
- Amplitude equalization for smooth cancellation and distribution
- Ability to cancel cross polarization leakage
- User-configurable parameters for cross-polarization delay, frequency offset, equalization, TWTA and SSPA tables, and satellite input back-off
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