Distributed Rateless Codes with Unequal Error Protection Property for Space Information Networks
Jian Jiao,
Yi Yang,
Bowen Feng,
Shaohua Wu,
Yonghui Li,
Qinyu Zhang
Affiliations
Jian Jiao
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
Yi Yang
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
Bowen Feng
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
Shaohua Wu
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
Yonghui Li
School of Electrical and Information on Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Qinyu Zhang
Communication Engineering Research Centre, Harbin Institute of Technology Shenzhen Graduate School, HIT Campus of University Town of Shenzhen, Shenzhen 518055, China
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.
