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Directional modulation far-field pattern separation synthesis approach

机译:定向调制远场模式分离综合方法

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摘要

In this study, a far-field power pattern separation approach is proposed for the synthesis of directional modulation (DM) transmitter arrays. Separation into information patterns and interference patterns is enabled by far-field pattern null steering. Compared with other DM synthesis methods, for example, bit error rate-driven DM optimisation and orthogonal vector injection, the approach developed in this study facilitates manipulation of artificial interference spatial distributions. With such capability more interference power can be projected into those spatial directions most vulnerable to eavesdropping, that is, the information side lobes. In such a fashion, information leaked through radiation side lobes can be effectively mitigated in a transmitter power efficient manner. Furthermore, for the first time, the authors demonstrate how multi-beam DM transmitters can be synthesised via this approach.
机译:在这项研究中,提出了一种用于合成定向调制(DM)发射机阵列的远场功率模式分离方法。通过远场模式零点操纵可以将信息模式和干扰模式分离。与其他DM合成方法(例如,误码率驱动的DM优化和正交矢量注入)相比,本研究开发的方法有助于操纵人为干扰的空间分布。利用这种能力,可以将更多的干扰功率投射到最容易被窃听的那些空间方向上,即信息旁瓣。以这种方式,可以以发射机功率有效的方式有效地减轻通过辐射旁瓣泄漏的信息。此外,作者首次展示了如何通过这种方法来合成多波束DM发射机。

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