一种新的量子无线通信的层次结构和信道编码  

Hierarchical architecture and channel coding of a novel wireless quantum communication

作　　者：郭莉森 沈洁 赵伦[3] 余建国[3] 

机构地区：[1]北京邮电大学图书馆,北京100876 [2]中国普天信息产业股份有限公司,北京100080 [3]北京邮电大学电子工程学院,北京100876

出　　处：《光通信研究》2015年第1期44-47,63,共5页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61377079)

摘　　要：量子无线通信具有信息量大、传输瞬时性和安全性良好等优点。文章在研究量子自由空间传播特性的基础上,总结了量子无线收发信机纠缠态的分发机制,并提出了适用于无线广域网的量子无线层次网络结构。针对如何进行信道编码,使其性能接近系统容限,以及如何将量子信道编码转换为经典编码的问题,提出采用三量子比特的信道编码,并给出一种非规则的编解码方法,用EXIT图分析了其性能,结果表明该体系结构适合未来的量子无线通信应用。Wireless quantum communication is characteristic of huge information quantity,transmission instantaneity and good security.On the basis of studying the quantum propagation characteristics in free space,this paper summarizes the entangled-state distribution mechanism of wireless quantum transceivers,and presents a wireless quantum hierarchical network structure suitable for wireless Wide Area Networks （WAN）.Furthermore,for performing channel coding,making its performance close to the system tolerance and converting quantum channel coding into classical coding,it proposes adopting the 3-qubit channel coding,and gives an irregular coding/decoding scheme and analyzes its performances using the EXIT chart.The results indi-cate that this system architecture is suitable for the future applications of wireless quantum communications.

关 键 词：量子无线通信 层次结构 EXIT 图 非规则编码 

分 类 号：TN911.22[电子电信—通信与信息系统]