Link-Signature-Based Discriminatory Channel Estimation (LS-DCE) for Physical Layer Security in Stationary and Mobile OFDM Transceivers
| Autor: | Khair Al Shamaileh, Ahmad Y. Javaid, Abdulsahib Albehadili, Vijay K. Devabhakuni |
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| Rok vydání: | 2020 |
| Předmět: |
Spatial correlation
Computer Networks and Communications Computer science Orthogonal frequency-division multiplexing Physical layer Aerospace Engineering Nakagami distribution Multiplexing Signal-to-noise ratio Automotive Engineering Electrical and Electronic Engineering Algorithm Communication channel Phase-shift keying |
| Zdroj: | IEEE Transactions on Vehicular Technology. 69:8119-8131 |
| ISSN: | 1939-9359 0018-9545 |
| DOI: | 10.1109/tvt.2020.2995540 |
| Popis: | In this work, we propose a physical layer security (PLS) scheme for orthogonal frequency-division multiplexing (OFDM) based transceivers, termed link-signature-based discriminatory channel estimation (LS-DCE). The proposed scheme exploits the space-time uniqueness of the channel responses (i.e. link-signatures) at different transceiver pairs to facilitate a reliable signal reception at legitimate receivers, while equivocating reception at non-legitimate adversaries. While most PLS studies focus on transmitted data to provide such an equivocation, LS-DCE focuses on channel estimations. Since the quality of estimates impacts the overall performance, LS-DCE facilitates distinctive detection error probabilities by enforcing a poor channel estimation at non-legitimate receivers as compared to legitimate ones. To validate the effectiveness of the proposed scheme, analytical, simulated, and experimental evaluations are performed. First, a theoretical analysis is established in terms of the probability of bit error (PBE) at the legitimate and non-legitimate receivers. Then, indoor/outdoor stochastic and deterministic channel models are adopted using correlated Nakagami-m simulation model and software-defined radio (SDR) testbed, respectively. With $-10\,{\rm dB}$ signal-to-noise ratio (SNR), it is found that a spatial correlation $\leq 0.1$ between the legitimate and non-legitimate channels results in an average PBE of 0.48, 0.48, and 0.49 for BPSK, QPSK, and 16-QAM, respectively, at the non-legitimate receiver; and 0.45, 0.46, and 0.48 with $\text{50}\,{\rm dB}$ SNR. |
| Databáze: | OpenAIRE |
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