Physical Layer Encryption for Wireless OFDM Communication Systems
Physical Layer Encryption for Wireless OFDM Communication Systems
复制标题
DOI：
10.1007/s41635-020-00097-8
复制
发表时间：
2020-07
期刊：
影响因子：
--
通讯作者：
Marko Jacovic;Kyle Juretus;Nagarajan Kandasamy;I. Savidis;K. Dandekar
中科院分区：
文献类型：
--
作者：
Marko Jacovic;Kyle Juretus;Nagarajan Kandasamy;I. Savidis;K. Dandekar
我们的日常生活受到住宅、工业和商业环境中广泛采用的无线通信系统的影响。设备必须安全可靠，以支持大规模异构网络的出现。更高层的加密技术，如Wi-Fi保护访问（WPA/WPA2）容易受到威胁，甚至包括最新的WPA 3版本。物理层安全利用物理层或PHY层的现有组件来提供适合于无线设备的低复杂性解决方案。提出了一种基于频率感应的正交频分复用（OFDM）信号物理层加密技术，以提高对窃听者的安全性。该安全收发器由密钥频移映射器、加密模块和改进的解密同步器组成。该系统已在Virtex-7 FPGA上实现。在Virtex-7上产生的发送器和接收器的额外硬件开销很低。仿真和硬件评估结果表明，所提出的系统是能够提供安全的通信从窃听者与性能没有下降相比，一个标准的OFDM收发器的基线情况。本文提出的技术为基于OFDM的无线通信系统提供了更高的安全性。
Our everyday lives are impacted by the widespread adoption of wireless communication systems integral to residential, industrial, and commercial settings. Devices must be secure and reliable to support the emergence of large scale heterogeneous networks. Higher layer encryption techniques such as Wi-Fi Protected Access (WPA/WPA2) are vulnerable to threats, including even the latest WPA3 release. Physical layer security leverages existing components of the physical or PHY layer to provide a low-complexity solution appropriate for wireless devices. This work presents a PHY layer encryption technique based on frequency induction for Orthogonal Frequency Division Multiplexing (OFDM) signals to increase security against eavesdroppers. The secure transceiver consists of a key to frequency shift mapper, encryption module, and modified synchronizer for decryption. The system has been implemented on a Virtex-7 FPGA. The additional hardware overhead incurred on the Virtex-7 for both the transmitter and the receiver is low. Both simulation and hardware evaluation results demonstrate that the proposed system is capable of providing secure communication from an eavesdropper with no decrease in performance as compared with the baseline case of a standard OFDM transceiver. The techniques developed in this paper provide greater security to OFDM-based wireless communication systems.