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Raptor packets: a packet-centric approach to distributed raptor code design

Stefanovic, C. and Stankovic, Vladimir and Stojakovic, M. and Vukobratovic, Dejan (2009) Raptor packets: a packet-centric approach to distributed raptor code design. [Proceedings Paper]

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Abstract

In this paper, we address the problem of distributed Raptor code design over information packets located across the network nodes. We propose a novel approach to this problem that consists of generating, encoding and dispersing Raptor packets across the network. Unlike recent node-centric proposals, where network nodes are responsible for collecting information packets and performing Raptor encoding, in the proposed packet-centric approach this task is assigned to Raptor packets. In a two-step encoding procedure that corresponds to precoding and LT-coding step of standard Raptor encoding, Raptor packets randomly traverse the network, collect and encode sufficient number of information packets following exactly a given degree distribution, and finish their paths in a random network node. The efficiency of the distributed Raptor coding scheme is confirmed by simulation results, where their performance is demonstrated to approach closely the performance of standard (centralized) Raptor codes.

Item type: Proceedings Paper
ID code: 31091
Keywords: code standards, design engineering , encoding , informatics , iterative decoding , mathematics , power engineering , proposals, statistics, wireless sensor networks, channel coding, random codes, precoding, LT-coding, distributed Raptor code design , information packet-centric approach, random network node, two-step encoding procedure, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 16 May 2011 12:47
    Last modified: 07 Dec 2013 08:12
    URI: http://strathprints.strath.ac.uk/id/eprint/31091

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