Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes
المؤلف | Marzban, Mohamed F. |
المؤلف | El Shafie, Ahmed |
المؤلف | Al-Dhahir, Naofal |
المؤلف | Hamila, Ridha |
تاريخ الإتاحة | 2020-06-23T20:45:40Z |
تاريخ النشر | 2019 |
اسم المنشور | IEEE Access |
المصدر | Scopus |
الرقم المعياري الدولي للكتاب | 21693536 |
الملخص | We investigate the physical-layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a common legitimate base-station, Bob, in the presence of an eavesdropper, Eve. To secure the legitimate transmissions, each user superimposes an artificial noise (AN) signal on the time-domain SC-FDMA data symbol. We reduce the computational and storage requirements at Bob's receiver by assuming simple per-sub-channel detectors. We assume that Eve has global channel knowledge of all links in addition to high computational capabilities, where she adopts high-complexity detectors such as single-user maximum likelihood (ML), multi-user minimum-mean-square-error, and multi-user ML. We analyze the correlation properties of the time-domain AN signal and illustrate how Eve can exploit them to reduce the AN effects. We prove that the number of useful AN streams that can degrade Eve's signal-to-noise ratio is dependent on the channel memories of Alices-Bob and Alices-Eve links. Furthermore, we enhance the system security for the case of partial Alices-Bob channel knowledge at Eve, where Eve only knows the precoding matrices of the data and AN signals instead of knowing the entire Alices-Bob channel matrices, and propose a hybrid security scheme that integrates temporal AN with channel-based secret key extraction. - 2019 IEEE. |
راعي المشروع | This work was supported by the Qatar National Research Fund (a member of the Qatar Foundation) through NPRP under Grant 8-627-2-260. The statements made herein are solely the responsibility of the authors. |
اللغة | en |
الناشر | Institute of Electrical and Electronics Engineers Inc. |
الموضوع | eavesdropping Multi-user SC-FDMA physical-layer (PHY) security |
النوع | Article |
الصفحات | 14809-14824 |
رقم المجلد | 7 |
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