Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks

Details Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks

2010-01-21

arxiv.org/abs/1001.3765v1

IEEE Journal on Selected Areas in Communications (JSAC), Special issue on Network Coding for Wireless Communication Networks,

Computer Science

Information Theory

Scientific paper

This paper studies decentralized, Fountain and network-coding based strategies for facilitating data collection in circular wireless sensor networks, which rely on the stochastic diversity of data storage. The goal is to allow for a reduced delay collection by a data collector who accesses the network at a random position and random time. Data dissemination is performed by a set of relays which form a circular route to exchange source packets. The storage nodes within the transmission range of the route's relays linearly combine and store overheard relay transmissions using random decentralized strategies. An intelligent data collector first collects a minimum set of coded packets from a subset of storage nodes in its proximity, which might be sufficient for recovering the original packets and, by using a message-passing decoder, attempts recovering all original source packets from this set. Whenever the decoder stalls, the source packet which restarts decoding is polled/doped from its original source node. The random-walk-based analysis of the decoding/doping process furnishes the collection delay analysis with a prediction on the number of required doped packets. The number of doped packets can be surprisingly small when employed with an Ideal Soliton code degree distribution and, hence, the doping strategy may have the least collection delay when the density of source nodes is sufficiently large. Furthermore, we demonstrate that network coding makes dissemination more efficient at the expense of a larger collection delay. Not surprisingly, a circular network allows for a significantly more (analytically and otherwise) tractable strategies relative to a network whose model is a random geometric graph.

Affiliated with

Also associated with

No associations

Rating

Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doped Fountain Coding for Minimum Delay Data Collection in Circular Networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-249053