Joint Network and Fountain Codes Design for RelayAssisted Multi-User System

查看全文 作　　者：HUANG [1]Ying;LEI [1]Jing;WEI [1]Jibo

机构地区：[1]Institute of Electronic Science and Engineering,National University of Defense Technology

出　　处：《China Communications》索引2015年第12卷第7期,共12页

基　　金：supported in part by a grant from the Ph.D. Programs Foundation of Ministry of Education of China under Grants No. 20094307110004;National Natural Science Foundation of China under Grants No.61372098, No.61101074;Natural Science Foundation of Hunan Province, China under Grants No.12jj2037 摘　　要：In relay-assisted multi-user system, relay coding is important to enhance the robustness and reliability of cooperative transmission. For better adaptability and efficiency, two joint network and fountain coding(JNFC) schemes are proposed. When the condition of all direct channels is worse, JNFC scheme based on distributed LT(DLT) codes is used. Otherwise, JNFC scheme based on multi-dimensional LT(MD-LT) codes is suited. For both two above-mentioned schemes, the united degree distribution design method for short-length fountain codes is proposed. For the latter scheme, MD-LT codes are proposed for equal error protection(EEP) of each user. Simulation results and analysis show that the united degree distribution need less decoding overhead compared with other degree distribution for short-length fountain codes. And then, all users are protected equally in despite of asymmetric uplinks. 关键词：多用户系统连接网络设计方法喷泉错误保护度分布仿真结果上行链路

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Joint Network and Fountain Codes Design for RelayAssisted Multi-User System

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