TY - GEN
T1 - Angularly Dispersive Terahertz Links with Secure Coding
T2 - 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks, WiSec 2022
AU - Yeh, Chia Yi
AU - Cohen, Alejandro
AU - D'Oliveira, Rafael G.L.
AU - Médard, Muriel
AU - Mittleman, Daniel M.
AU - Knightly, Edward W.
N1 - Publisher Copyright:
© 2022 ACM.
PY - 2022/5/16
Y1 - 2022/5/16
N2 - 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.
AB - 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.
KW - angular dispersion
KW - experiment
KW - security
KW - terahertz
UR - http://www.scopus.com/inward/record.url?scp=85130774555&partnerID=8YFLogxK
U2 - 10.1145/3507657.3528553
DO - 10.1145/3507657.3528553
M3 - Conference contribution
AN - SCOPUS:85130774555
T3 - WiSec 2022 - Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks
SP - 268
EP - 273
BT - WiSec 2022 - Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks
PB - Association for Computing Machinery, Inc
Y2 - 16 May 2022 through 19 May 2022
ER -