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Network Coding Multicast in Satellite Networks

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2 Author(s)
Vieira, F. ; Inst. de Telecomunicaoes, Univ. do Porto, Porto, Portugal ; Barros, J.

The broadcast nature of satellite networks such as DVB-RCS based systems provides a highly effective medium for content distribution, especially in the case of geographically scattered clients. Non-real-time services typically rely on application level protocols that often use forward error correction (FEC) and carousel data cycling schemes in unidirectional links. The presence of a feedback channel in satellite networks is mostly unexploited in the context of reliable multicast services. We show that network coding protocols offer a native and transparent solution for reliable multicast over satellites. When employing a feedback channel, network coding can reach near real-time performance at an efficiency level close to known theoretical bounds for lossy satellite links.

Published in:

Next Generation Internet Networks, 2009. NGI '09

Date of Conference:

1-3 July 2009