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 indicate that this system architecture is suitable for the future applications of wireless quantum communications.