Multichannel joint-polarization-frequency-modulation encrypted metasurface in secure THz communication
Since the discovery of wireless telegraphy, wireless communication via electromagnetic (EM) signals has become a standard solution to meet the growing demand for information transfer in modern society. To prevent counterfeiting and manipulation by unauthorized individuals and agencies, it is crucial...
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Zusammenfassung: | Since the discovery of wireless telegraphy, wireless communication via
electromagnetic (EM) signals has become a standard solution to meet the growing
demand for information transfer in modern society. To prevent counterfeiting
and manipulation by unauthorized individuals and agencies, it is crucial to
innovate and enhance security through information encryption. In this paper, we
introduce a metasurface that controls amplitude modulation at two different
frequencies. Here, focusing on amplitude-frequency modulation for both x- and
y- polarizations, we present an encrypted wireless communication protocol that
using the chaos algorithm to secure the target data and prevent eavesdroppers
from accessing it. The encrypted data is transmitted through the varying
amplitudes at two different frequencies for both linear polarizations, achieved
using two distinct graphene layers individually controlled by external biasing
conditions. The extensive freedom enabled by simultaneous modulation of
amplitude, frequency, and polarization allows information to be transmitted
across diverse channels, thereby enhancing the security of encrypted
information. The simulations demonstrate that encoding data, such as images,
and transmitting it through amplitude-frequency modulation for both horizontal
and vertical polarizations offer promising opportunities for various
applications, including THz communications, anti-counterfeiting, THz data
storage, and THz data transmission. |
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DOI: | 10.48550/arxiv.2409.15966 |