基于混沌理论的模拟量纠错编码方法研究  

Research of AECC Based on Chaotic Theory

作　　者：胡星[1] 马林华[1] 贾镇泽[1] 杨雪 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038 [2]空军驻北京地区军事代表局,北京100009

出　　处：《电视技术》2014年第9期175-179,201,共6页Video Engineering

基　　金：陕西省"电子信息系统综合集成"重点实验室重点基金项目(2011ZD01;201102Y02)

摘　　要："模拟量纠错编码"方法,就是对采样数据不进行A/D变换,直接建立模拟量之间的编码约束关系。借鉴近年"镜像Baker码"模拟量纠错编码研究成果,提出"四位循环Baker码"的构造和最大似然译码方法,有效提高了纠错性能。在图像传输应用的仿真结果表明:改进的"四位循环Baker码"在高信噪比情况下,其纠错性能与镜像Baker码相比得到很大的提高;与数字编码体系相比,在低信噪比下,模拟量编码具有更好的抗噪声性能。模拟量信道纠错编码在无线通信,特别是信道的干扰或噪声大的图像通信中,具有应用优势。The method of AECC （Analog Error Correction Codes） is the way to build the relation between the analog information directly, without A/D conversion for the sampled information. By referring to the Mirrored Baker＇ s codes proposed by Xie Kai and Li Jing, the new four-bits cyclic Baker＇ s codes are proposed. It can be decoded by the maximum-likelihood decoding algorithm. The four-bits cyclic Baker＇ s codes are applied to the transmission of the dig- ital image. The result of simulation shows that the four-bits cyclic Baker＇ s codes perform better than the Mirrored Baker＇ s codes especially in high SNR. Compared with the digital correction codes, the AECC performs better in the anti-noise capability. The AECC can play an important role in wireless commu- nication, and especially have the advantages in the application of image transmission through the channel with high noise or interfered.

关 键 词：混沌理论 模拟量编码 镜像Baker码 四位循环Baker码 图像传输 

分 类 号：TN911.2[电子电信—通信与信息系统]