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首页> 外文期刊>Journal of Information Security >Frequency Hopping Spread Spectrum Security Improvement with Encrypted Spreading Codes in a Partial Band Noise Jamming Environment
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Frequency Hopping Spread Spectrum Security Improvement with Encrypted Spreading Codes in a Partial Band Noise Jamming Environment

机译：在部分频带噪声干扰环境中使用加密的扩频码提高跳频扩频安全性

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Frequency Hopping Spread Spectrum (FHSS) system is often deployed to protect wireless communication from jamming or to preclude undesired reception of the signal. Such themes can only be achieved if the jammer or undesired receiver does not have the knowledge of the spreading code. For this reason, unencrypted M-sequences are a deficient choice for the spreading code when a high level of security is required. The primary objective of this paper is to analyze vulnerability of linear feedback shift register (LFSRs) codes. Then, a new method based on encryption algorithm applied over spreading codes, named hidden frequency hopping is proposed to improve the security of FHSS. The proposed encryption security algorithm is highly reliable, and can be applied to all existing data communication systems based on spread spectrum techniques. Since the multi-user detection is an inherent characteristic for FHSS, the multi-user interference must be studied carefully. Hence, a new method called optimum pair “key-input” selection is proposed which reduces interference below the desired constant threshold.
机译：经常使用跳频扩频（FHSS）系统来保护无线通信不受干扰或防止不希望的信号接收。仅在干扰者或不希望的接收者不了解扩展码的情况下才能实现这些主题。因此，当需要高级别的安全性时，对于扩展码，未加密的M序列是一个不足的选择。本文的主要目的是分析线性反馈移位寄存器（LFSR）代码的脆弱性。然后，提出了一种在扩展码上应用基于加密算法的新方法，称为隐藏跳频，以​​提高FHSS的安全性。所提出的加密安全算法是高度可靠的，并且可以应用于基于扩频技术的所有现有数据通信系统。由于多用户检测是FHSS的固有特性，因此必须仔细研究多用户干扰。因此，提出了一种称为最佳对“键输入”选择的新方法，该方法将干扰降低到所需的恒定阈值以下。

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