桂林电子科技大学学报2017，Vol.37Issue(5)：355-360,6.
一种用于LT码的新型联合度分布设计方法
A design method of novel combined degree distribution for LT code
摘要
Abstract
In order to improve the performance of LT code,a design method of novel combined degree distribution for LT code is proposed.The power-law distribution is combined with robust soliton distribution,and then,based on the ripple function of the combined degree distribution,the golden section algorithm is used to search the appropriate parameters which lead to better decoding performance of LT code.The simulation results show that the proposed combined degree distribution always has the best encoding/decoding performance among the RSD,the scale-free LT1 and the proposed combined degree distribution when the erasure probability is different over binary erasure channel.Compared with RSD,the proposed com-bined degree distribution saves 2.23%-7.62% overhead and speeds up the encoding/decoding process by 9.46%-28.57%to decode entire input symbols when the channel erasure probability is zero.关键词
LT码/鲁棒孤子分布/联合度分布/二进制删除信道Key words
LT code/robust soliton distribution/combined degree distribution/binary erasure channel分类
信息技术与安全科学引用本文复制引用
龚赟,王俊义..一种用于LT码的新型联合度分布设计方法[J].桂林电子科技大学学报,2017,37(5):355-360,6.基金项目
国家自然科学基金(61261017) （61261017）
