Angularly Dispersive Terahertz Links with Secure Coding: From Theoretical Foundations to Experiments
Angularly Dispersive Terahertz Links with Secure Coding: From Theoretical Foundations to Experiments
复制标题
角色散太赫兹与安全编码的联系：从理论基础到实验
DOI：
10.1145/3507657.3528553
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Knightly, Edward W.
中科院分区：
文献类型：
--
作者：
Yeh, Chia-Yi;Cohen, Alejandro;D'Oliveira, Rafael G.;Médard, Muriel;Mittleman, Daniel M.;Knightly, Edward W.
在太赫兹范围内可用的大带宽的情况下，定向传输可以表现出角色散，即，频率相关辐射方向。不幸的是，角色散引入了新的安全威胁，因为增加的带宽必然会在空间域中产生更大的信号足迹，并可能使窃听者受益。本文首次研究了角色散链路上的安全传输策略。基于信息论的基础上，我们提出了在频率上信道化宽带传输，并执行跨频率信道的安全编码。通过空中实验，我们表明，所提出的方法利用角色散的特性，实现安全的宽带传输，尽管增加了信号足迹，甚至对于实际的不规则波束与旁瓣和不对称。相比之下，如果没有所提出的跨信道编码策略，当带宽增加时，角度分散链路可能遭受显著的安全性降低。
With the large bandwidths available in the terahertz regime, directional transmissions can exhibit angular dispersion, i.e., frequency-dependent radiation direction. Unfortunately, angular dispersion introduces new security threats as increased bandwidth necessarily yields a larger signal footprint in the spatial domain and potentially benefits an eavesdropper. This paper is the first study of secure transmission strategies on angularly dispersive links. Based on information theoretic foundations, we propose to channelize the wideband transmission in frequency, and perform secure coding across frequency channels. With over-the-air experiments, we show that the proposed method exploits the properties of angular dispersion to realize secure wideband transmissions, despite the increased signal footprint and even for practical irregular beams with side lobes and asymmetry. In contrast, without the proposed cross-channel coding strategy, angularly dispersive links can suffer from significant security degradation when bandwidth increases.
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DOI：
10.1145/3372224.3380895
发表时间：
2020-04
期刊：
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影响因子：
--
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影响因子：
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影响因子：
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DOI：
10.1145/3384419.3430717
发表时间：
2020-11
期刊：
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影响因子：
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作者：
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影响因子：
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