The design and analysis of unequal error protection fountain coding for multiple source networks over binary erasure channels  

作　　者：SHAO HanQin XU DaZhuan ZHANG XiaoFei 

机构地区：[1]College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics

出　　处：《Science China(Information Sciences)》2014年第8期1-9,共9页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant No.61371169);Aeronautical Science Foundation of China (Grant No.20120152001);Fundamental Research Funds for the Central Universities (Grant Nos.2009ZC52036,NZ2012010,NZ2012012)

摘　　要：A novel network model of multiple source fountain coding is developed and a novel class of generic multiple source fountain codes with unequal error protection （UEP） property is proposed. The And Or tree analysis technique is generalized to analyze the asymptotic performance of the proposed codes and a joint optimization method employing both linear and nonlinear programs is developed to optimize the degree dis- tributions. Furthermore, we propose three basic methods to achieve UEP property and the performance of each method is discussed. We employ these analytical results and optimization method to design and discuss several UEP codes with two and four sources for different application scenarios. Simulation results verify that the proposed codes can be applied to the networks with any number of sources and can provide strong UEP property in various ways based on the proposed three basic methods.A novel network model of multiple source fountain coding is developed and a novel class of generic multiple source fountain codes with unequal error protection （UEP） property is proposed. The And Or tree analysis technique is generalized to analyze the asymptotic performance of the proposed codes and a joint optimization method employing both linear and nonlinear programs is developed to optimize the degree dis- tributions. Furthermore, we propose three basic methods to achieve UEP property and the performance of each method is discussed. We employ these analytical results and optimization method to design and discuss several UEP codes with two and four sources for different application scenarios. Simulation results verify that the proposed codes can be applied to the networks with any number of sources and can provide strong UEP property in various ways based on the proposed three basic methods.

关 键 词：asymptotic analysis fountain codes binary erasure channels network coding linear program nonlinear program unequal error protection multiple source networks 

分 类 号：TN911.22[电子电信—通信与信息系统]