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Entropy 2017, 19(1), 38; doi:10.3390/e19010038

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

1,2,†
,
1,†
,
1,†
,
1,* , 2
and
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
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Raúl Alcaraz Martínez
Received: 26 November 2016 / Revised: 16 January 2017 / Accepted: 16 January 2017 / Published: 18 January 2017
(This article belongs to the Section Information Theory)
View Full-Text   |   Download PDF [641 KB, uploaded 18 January 2017]   |  

Abstract

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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MDPI and ACS Style

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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