Enhancing Capacity Of A Satellite Broadband System Via Adaptive Coding And Modulation

Topics:
Access Technologies
Tags:
ACM,
Telecommunications,
SurfBeam,
Satellite Broadband,
Satellite,
Personal Technology,
Networking,
Network Technology,
Cable,
Broadband Internet,
...
Source:
ViaSat

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Overview: SurfBeam is a broadband satellite system developed by ViaSat Inc., based on the Data Over Cable Service Interface Specification (DOCSIS). SurfBeam has been deployed internationally with tens of thousands of users. This paper describes the implementation of an Adaptive Coding and Modulation (ACM) scheme for SurfBeam that leads to enhanced system capacity for the downlink channel. The ACM scheme employed monitors each consumer's downlink channel quality and dynamically changes the modulation/codepoint at which that user is sent his/her information. It is shown that in certain situations, the average annual throughput of the ACM enabled SurfBeam physical layer can be more than twice that of a system with a static physical layer.

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Format: PDF | Size: 92KB | Date: Jun 2006 | Pages: 1

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