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- W2076304802 abstract "Emerging IPTV technology uses source-specific IP multicast to deliver television programs to end-users. Toprovide reliable IPTV services over the error-prone DSL access networks, a combination of multicast forwarderror correction (FEC) and unicast retransmissions is employed to mitigate the impulse noises in DSL links.In existing systems, the retransmission function is provided by the Retransmission Servers sitting at the edgeof the core network. In this work, we propose an alternative distributed solution where the burden of packetloss repair is partially shifted to the peer IP set-top boxes. Through Peer-Assisted Repair (PAR) protocol, wedemonstrate how the packet repairs can be delivered in a timely, reliable and decentralized manner using thecombination of server-peer coordination and redundancy of repairs. We also show that this distributed protocolcan be seamlessly integrated with an application-layer source-aware error protection mechanism called forwardand retransmitted Systematic Lossy Error Protection (SLEP/SLEPr). Simulations show that this joint PARSLEP/SLEPr framework not only effectively mitigates the bottleneck experienced by the Retransmission Servers,thus greatly enhancing the scalability of the system, but also efficiently improves the resistance to the impulsenoise." @default.
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- W2076304802 date "2010-07-11" @default.
- W2076304802 modified "2023-09-23" @default.
- W2076304802 title "IPTV multicast with peer-assisted lossy error control" @default.
- W2076304802 doi "https://doi.org/10.1117/12.863273" @default.
- W2076304802 hasPublicationYear "2010" @default.
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