LT Code Design Based on RC4 Sequential Cipher

摘要：

　　As the first practical fountain code,LT (Luby Transform) code is the basis of other fountain codes.In theory,for each encoding symbol of LT code,the neighbors used to generate that encoding symbol are chosen uniformly at random.Practical implementations of LT codes usually realize the randomness through pseudo-randomness number generators like LCG (Linear Congruential Generator).In this paper,an LT code design based on RC4 sequential cipher is proposed,which we called RC4-LT code.In RC4-LT code,the traditional linear congruential method is replaced with RC4 sequential cipher to generate random number stream,and a scrambling degree neighbor generation algorithm is proposed.Moreover,we exploit the cryptographic properties of RC4 algorithm to implement secure data transmission.Simulation results show that,RC4-LT code has more efficient decoding performance,smaller transmission overhead and necessary security compared with the conventional LT code.

关键词： sequential cipher fountain code LCG RC4 encoding symbol

作者: Yanling Xing Yukui Pei Ning Ge

作者单位: Department of Electronic Engineering Tsinghua University Beijing, China

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 1246-1250

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）