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Design and Analysis of the EWFRFT-based Extended Hybrid Carrier System

机译：基于EWFRFT的扩展混合载波系统的设计与分析

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摘要

In this paper, we propose a security scheme based on extended weighted fractional Fourier transform to guarantee the physical layer security of wireless communication. The proposed scheme extends the existing fractional Fourier transform and reduces the equivalent signal-to-noise ratio and recognition probability of the eavesdropper by utilizing the anti-interception characteristics of the extended hybrid carrier signal, which guaranteed the robust nonzero security capability and anti-recognition performance. Moreover, due to the extension of parameter dimension, the diversity and design flexibility of EWFRFT also have adverse impacts on wiretapping. In addition, the self-interference property of the EHC signal is proposed and analyzed in detail to further enhance the security performance. Theoretical analysis and numerical simulation results show the superiority of the EWFRFT method. Compared with the existing HC system, the proposed scheme reduces the possibility of interception by eavesdroppers without extra computational complexity, which effectively guarantees the security of the system.
机译：在本文中，我们提出了一种基于扩展加权分数傅里叶变换的安全方案，以保证无线通信的物理层安全性。所提出的方案通过利用扩展混合载波信号的防拦截特性来扩展现有的分数傅里叶变换并降低窃听器的等效信噪比和识别概率，这保证了坚固的非零安全功能和防识别表现。此外，由于参数尺寸的延伸，EWFRFT的多样性和设计灵活性也对窃听产生了不利影响。另外，提出并分析了EHC信号的自干扰特性，并详细分析以进一步提高安全性能。理论分析和数值模拟结果表明了EWFRFT方法的优越性。与现有的HC系统相比，所提出的方案减少了窃听者拦截的可能性，而无需额外的计算复杂性，有效地保证了系统的安全性。

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