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Open AccessArticle

Distributed Rateless Codes with Unequal Error Protection Property for Space Information Networks

by Jian Jiao 1,2,†, Yi Yang 1,†, Bowen Feng 1,†, Shaohua Wu 1,*, Yonghui Li 2 and Qinyu Zhang 1,*
1
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
2
School of Electrical and Information on Engineering, The University of Sydney, Sydney, NSW 2006, Australia
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Raúl Alcaraz Martínez
Entropy 2017, 19(1), 38; https://doi.org/10.3390/e19010038
Received: 26 November 2016 / Revised: 16 January 2017 / Accepted: 16 January 2017 / Published: 18 January 2017
(This article belongs to the Section Information Theory, Probability and Statistics)
In this paper, we propose a novel distributed unequal error protection (UEP) rateless coding scheme (DURC) for space information networks (SIN). We consider the multimedia data transmissions in a dual-hop SIN communication scenario, where multiple disjoint source nodes need to transmit their UEP rateless coded data to a destination via a dynamic relay. We formulate the optimization problems to provide optimal degree distributions on the direct links and the dynamic relay links to satisfy the required error protection levels. The optimization methods are based on the And–Or tree analysis and can be solved by multi-objective programming. In addition, we evaluate the performance of the optimal DURC scheme, and simulation results show that the proposed DURC scheme can effectively provide UEP property under a variety of error requirements. View Full-Text
Keywords: distributed rateless codes; unequal error protection; space information networks; multi-objective programming distributed rateless codes; unequal error protection; space information networks; multi-objective programming
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Jiao, J.; Yang, Y.; Feng, B.; Wu, S.; Li, Y.; Zhang, Q. Distributed Rateless Codes with Unequal Error Protection Property for Space Information Networks. Entropy 2017, 19, 38.

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