Uncoordinated chaotic channel scrambling scheme for multiple-input, multiple-output-based VLC system
Uncoordinated chaotic channel scrambling scheme for multiple-input, multiple-output-based VLC system
复制标题
基于多输入多输出的VLC系统的非协调混沌信道加扰方案
DOI：
10.1049/iet-com.2017.1238
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发表时间：
2018-06
影响因子：
1.6
通讯作者：
张琳
中科院分区：
文献类型：
--
作者：
Yiru Wang;张琳
由于可见光通信信道的广播特性，可见光通信系统面临着窃听和恶意攻击的威胁。在这项研究中，作者提出了一种非协调的混沌信道加扰方案，以提高物理层的安全性的多输入，多输出的基础VLC系统。通过该方案，合法接收方可以利用收发方共享的位置信息对数据进行自解扰，而窃听者在没有密钥的情况下无法获取信息。首先将位置信息嵌入到混沌信道置乱矩阵中，然后采用非负正交分解方法提高置乱矩阵的可靠性和安全性。值得注意的是，借助于共享的位置信息，可以对接收到的数据进行自解扰，从而可以实现非协调的信道加扰。分析了该方案的理论安全性能，包括信息泄漏和保密容量，仿真结果表明，与同类方案相比，该方案具有更高的安全性和可靠性。
Due to the broadcasting property of visible light communication (VLC) channels, VLC systems are under the threat of eavesdropping and malicious attack. In this study, the authors present an uncoordinated chaotic channel scrambling scheme to enhance the physical layer security for a multiple-input, multiple-output based VLC system. With the authors design, the legitimate receiver can self-descramble the data with the location information shared between the transceivers, and the eavesdroppers cannot retrieve the information without the secret key. The authors firstly embed the location information into the chaotic channel scrambling matrix, and then apply the non-negative orthogonal factorisation method to improve both the reliability and the security. Notably, with the aid of the shared location information, the received data can be self-descrambled and thus the uncoordinated channel scrambling could be realised. The theoretical security performances including the information leakage and the secrecy capacity are analysed and the simulation results demonstrate that the proposed scheme achieves higher security and more reliable performances compared with the counterpart schemes.