Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission
Abstract New applications such as the Internet of Things, autonomous driving, Industry X.0 and many more will transmit sensitive information via fibers and over the air with envisioned data rates beyond terabits per second. Therefore, the encryption has to be simple, fast and spectrally efficient, s...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Communications Engineering |
| Online Access: | https://doi.org/10.1038/s44172-025-00351-3 |
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| _version_ | 1832571673505693696 |
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| author | Abhinand Venugopalan Karanveer Singh Janosch Meier Thomas Schneider |
| author_facet | Abhinand Venugopalan Karanveer Singh Janosch Meier Thomas Schneider |
| author_sort | Abhinand Venugopalan |
| collection | DOAJ |
| description | Abstract New applications such as the Internet of Things, autonomous driving, Industry X.0 and many more will transmit sensitive information via fibers and over the air with envisioned data rates beyond terabits per second. Therefore, the encryption has to be simple, fast and spectrally efficient, so that the power consumption and latency are low and the scarce bandwidth is not wasted. Various encryption schemes, based on mathematical algorithms, quantum theory, chaos communication or spectral spreading below the noise level have been explored. Besides power, spectral efficiency and latency, most of these approaches face additional challenges such as limited data rates, compatibility issues with communication standards and integration. Here, we propose a signal theory based method that enables the encryption of super-signals with bandwidths of hundreds of gigahertz without any additional bandwidth. In proof-of-concept experiments we demonstrate the encryption of a 270 GBd faster than Nyquist super-signal in a 252.4 GHz bandwidth. The encryption is simple, fast and power efficient, and offers a solution for secure data transmission in existing and future communication networks. |
| format | Article |
| id | doaj-art-a7142a332aa2420883254d1a094492e1 |
| institution | Kabale University |
| issn | 2731-3395 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Engineering |
| spelling | doaj-art-a7142a332aa2420883254d1a094492e12025-02-02T12:27:03ZengNature PortfolioCommunications Engineering2731-33952025-01-01411810.1038/s44172-025-00351-3Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmissionAbhinand Venugopalan0Karanveer Singh1Janosch Meier2Thomas Schneider3THz-Photonics Group, Technische Universität BraunschweigTHz-Photonics Group, Technische Universität BraunschweigTHz-Photonics Group, Technische Universität BraunschweigTHz-Photonics Group, Technische Universität BraunschweigAbstract New applications such as the Internet of Things, autonomous driving, Industry X.0 and many more will transmit sensitive information via fibers and over the air with envisioned data rates beyond terabits per second. Therefore, the encryption has to be simple, fast and spectrally efficient, so that the power consumption and latency are low and the scarce bandwidth is not wasted. Various encryption schemes, based on mathematical algorithms, quantum theory, chaos communication or spectral spreading below the noise level have been explored. Besides power, spectral efficiency and latency, most of these approaches face additional challenges such as limited data rates, compatibility issues with communication standards and integration. Here, we propose a signal theory based method that enables the encryption of super-signals with bandwidths of hundreds of gigahertz without any additional bandwidth. In proof-of-concept experiments we demonstrate the encryption of a 270 GBd faster than Nyquist super-signal in a 252.4 GHz bandwidth. The encryption is simple, fast and power efficient, and offers a solution for secure data transmission in existing and future communication networks.https://doi.org/10.1038/s44172-025-00351-3 |
| spellingShingle | Abhinand Venugopalan Karanveer Singh Janosch Meier Thomas Schneider Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission Communications Engineering |
| title | Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission |
| title_full | Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission |
| title_fullStr | Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission |
| title_full_unstemmed | Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission |
| title_short | Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission |
| title_sort | signal theory based encryption of faster than nyquist signals for fiber and wireless transmission |
| url | https://doi.org/10.1038/s44172-025-00351-3 |
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