Raptor Codes Based Distributed Storage Algorithms for Wireless Sensor Networks

Details Raptor Codes Based Distributed Storage Algorithms for Wireless Sensor Networks Raptor Codes Based Distributed Storage Algorithms for Wireless Sensor Networks

2009-03-03

arxiv.org/abs/0903.0445v1

Computer Science

Information Theory

published in IEEE ISIT 2008

Scientific paper

We consider a distributed storage problem in a large-scale wireless sensor network with $n$ nodes among which $k$ acquire (sense) independent data. The goal is to disseminate the acquired information throughout the network so that each of the $n$ sensors stores one possibly coded packet and the original $k$ data packets can be recovered later in a computationally simple way from any $(1+\epsilon)k$ of nodes for some small $\epsilon>0$. We propose two Raptor codes based distributed storage algorithms for solving this problem. In the first algorithm, all the sensors have the knowledge of $n$ and $k$. In the second one, we assume that no sensor has such global information.

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