基于混沌密钥控制的联合信源信道与安全算术码编译码算法  

Joint Source Channel and Security Arithmetic Coding Controlled by Chaotic Keys

作　　者：鄢懿[1] 张灿[1] 郭振永[1,2] 高绍帅[1] 陈德元[1] 

机构地区：[1]中国科学院大学电子电气与通信工程学院,北京101408 [2]伸国科学院电子学研究所,北京100190

出　　处：《电子与信息学报》2016年第10期2553-2559,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61571416,61271282,61032006)~~

摘　　要：该文针对深空通信、移动通信等资源受限网络中的信息有效性、可靠性和安全性传输,提出一种基于混沌密钥控制的联合信源信道与安全算术码编译码算法。该算法在编码端通过混沌映射1控制在算术码内嵌入多个禁用符号,将信道编码检错与密码流的扰乱相结合;同时,通过混沌映射2控制信源符号的算术编码,将信源编码与信息安全相结合,实现了联合信源信道与信息安全编译码。实验结果表明,该算法与现有的同类算法相比,当误包率为10^(-3)时,改善编译码性能0.4 dB,同时增强了可靠性和安全性。In order to transfer effective, reliable and secure information in resource-constrained networks such as deep space communications and mobile communications, a joint source channel security arithmetic coding method controlled by chaotic keys is proposed. At encoding, the first chaotic map allocates the probability of multiple forbidden symbols in arithmetic code, combining error detection by channel coding and disorder of key streams; meanwhile, the second chaotic map controls the source symbols in arithmetic code, combining source coding and information security. Simulation results show that the proposed method can not only achieve 0.4 dB signal-to-noise ratio gains compared with the existing similar arithmetic codes under the condition of same error rate, but also be of high reliability and security.

关 键 词：联合信源信道与安全编译码 算术码 禁用符号 混沌映射 

分 类 号：TN911.2[电子电信—通信与信息系统]