Security in terahertz WLANs with Leaky wave antennas

Yeh, Chia-Yi; Ghasempour, Yasaman; Amarasinghe, Yasith; Mittleman, Daniel M.; Knightly, Edward W.

doi:10.1145/3395351.3399365

Cited by 22 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To understand the security performance of angularly dispersive link, in this paper, a parallel-plate leaky-wave antenna (LWA) with the angular dispersion property [15] is employed for THz directional transmission. We denote the known frequency-dependent emission angle relationship by 𝜃 𝑚𝑎𝑥 (𝑓 ), and the electric field generated by the LWA by 𝐺 (𝑓 , 𝜃 ), both can be obtained before the deployment using an analytical model [6,14] or via over-the-air measurements.…”

Section: System Model 21 Angularly Dispersive Linkmentioning

confidence: 99%

“…To secure the angularly dispersive LWA link as defined in Sec. 2, we propose to perform cross-channel coding for the frequencychannelized transmission, leveraging the property that Eve only receives a subset of frequency channels well, but not all [15]. To demonstrate our idea, we specify a cross-channel coding scheme, which we term SCADL (Secure Coding for Angularly Dispersive Links), based on information theory and is adapted from prior work [9].…”

Section: Secure Codingmentioning

confidence: 99%

“…In particular, we propose to frequency channelize the wideband transmission and perform coding across frequency channels to secure the angularly dispersive link. The idea is to exploit the fact that for angularly dispersive links, Eve only intercepts a subset of frequency channels well, when she is at a different angular location from Bob [15]. Frequency channelization and cross-channel coding together force Eve to obtain high enough signal strength across the entire transmission band to decode the message Alice transmits, and thus limit Eve's chance of interception.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Angularly Dispersive Terahertz Links with Secure Coding

Yeh

Cohen

D’Oliveira

et al. 2022

Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks

View full text Add to dashboard Cite

With the large bandwidths available in the terahertz regime, directional transmissions can exhibit angular dispersion, i.e., frequencydependent 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. CCS CONCEPTS• Security and privacy → Mobile and wireless security.

show abstract

Section: System Model 21 Angularly Dispersive Linkmentioning

confidence: 99%

Section: Secure Codingmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Angularly Dispersive Terahertz Links with Secure Coding

Yeh

Cohen

D’Oliveira

et al. 2022

Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks

View full text Add to dashboard Cite

show abstract

“…As a low-cost and easy-to-manufacture travelingwave antenna, leaky-wave antenna can provide frequency-dependent narrow beams with high antenna gains [17], and own frequency-scanning capability [18,19]. It has been utilized in many areas such as frequency-division multiplexing THz communication [20], THz radar sensing [21][22][23], link discovery [14], and physical layer security enhancement [24]. One key feature of the leaky-wave antenna is that it enables the information transmissions in a spatial-spectral manner, i.e., frequencies are correlated with the transmission directions.…”

Section: Introductionmentioning

confidence: 99%

“…The aforementioned works only study the case of point-to-point THz communication with leaky-wave antenna [20,24]. When there exist large numbers of transceivers in the THz networks with massive connections, the co-channel interference has an adverse effect on the transmission rate, which needs to be evaluated.…”

Section: Introductionmentioning

confidence: 99%

Spatial-spectral Terahertz Networks

Wang¹,

Tan²,

Li³

2021

Preprint

View full text Add to dashboard Cite

This paper focuses on the spatial-spectral terahertz (THz) networks, where transmitters equipped with the leaky-wave antennas send information to their receivers at the THz frequency bands. As a directional and nearly planar antenna, leaky-wave antenna allows for information transmissions with narrow beams and high antenna gains. The conventional large antenna arrays are confronted with challenging issues such as scaling limits and path discovery in the THz frequencies. Therefore, this work exploits the potential of leaky-wave antennas in the dense THz networks, to establish low-complexity THz links. By addressing the propagation angle-frequency coupling effects, the transmission rate is analyzed. The results show that leaky-wave antenna is efficient for achieving high-speed transmission rate and the co-channel interference management is not necessary when the THz transmitters with large subchannel bandwiths are not extremely dense. A simple subchannel allocation solution is proposed, which enhances the transmission rate compared with the same number of subchannels with equal allocation of frequency band. After subchannel allocation, a low-complexity power allocation method is proposed to improve the energy efficiency.

show abstract

Jamming a terahertz wireless link

et al. 2022

Self Cite

View full text Add to dashboard Cite

As the demand for bandwidth in wireless communication increases, carrier frequencies will reach the terahertz (THz) regime. One of the common preconceived notions is that, at these high frequencies, signals can radiate with high directivity which inherently provides more secure channels. Here, we describe the first study of the vulnerability of these directional links to jamming, in which we identify several features that are distinct from the usual considerations of jamming at low frequencies. We show that the receiver’s use of an envelope detector provides the jammer with the ability to thwart active attempts to adapt to their attack. In addition, a jammer can exploit the broadband nature of typical receivers to implement a beat jamming attack, which allows them to optimize the efficacy of the interference even if their broadcast is detuned from the frequency of the intended link. Our work quantifies the increasing susceptibility of broadband receivers to jamming, revealing previously unidentified vulnerabilities which must be considered in the development of future wireless systems operating above 100 GHz.

show abstract

Security in terahertz WLANs with Leaky wave antennas

Cited by 22 publications

References 30 publications

Angularly Dispersive Terahertz Links with Secure Coding

Angularly Dispersive Terahertz Links with Secure Coding

Spatial-spectral Terahertz Networks

Jamming a terahertz wireless link

Contact Info

Product

Resources

About