A hybrid artificial-noise and secret-key scheme for securing OFDM transmissions in V2G networks

Shafie, Ahmed El; Marzban, Mohamed F.; Chabaan, Rakan; Al-Dhahir, Naofal

doi:10.1109/ccnc.2018.8319208

Cited by 4 publications

(4 citation statements)

References 33 publications

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“…A novel power allocation and AN precoding technology in MIMO-OFDM system are described in [4]. In [5] and [6], a creative technique based on interference alignment and AN is proposed, which greatly expands the application scope of AN technology. A three-level optimization procedure to increase the average secrecy rate of this wiretap channel by optimizing the transmit power allocation between the encrypted data symbols, unencrypted data symbols and the AN symbols is proposed in [7].…”

Section: Communication Encryption Technologymentioning

confidence: 99%

The Secrecy Capacity Optimization Artificial Noise: A New Type of Artificial Noise for Secure Communication in MIMO System

Yin

et al. 2019

IEEE Access

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In multiple-input multiple-output wireless communication system, artificial noise (AN) is designed to be aligned into the null space of the legitimate channel so that it has no effect on the legitimate channel. Meanwhile, AN will reduce the secrecy capacity of the eavesdropping channel so that AN increase the secrecy capacity of the wireless communication system. Nevertheless, AN technology only pays attention to the CSI of the legitimate channel but does not pay attention to the CSI of the eavesdropping channel so that the secrecy capacity of the system can be further improved. In this paper, we analyze the performance of traditional AN. A secrecy capacity optimization artificial noise for the whole communication system to further improve the system's secrecy capacity is proposed. The secrecy capacity optimization artificial noise is considered as a kind of artificial noise which is disadvantageous to the legitimate receiver but more disadvantageous to the eavesdropper. Furthermore, we further analyzed the technical details of AN technology and found the key factor affecting the secrecy capacity. Meanwhile, the secrecy capacity optimization artificial noise is effectively designed by applying these conclusions and the key factors of secrecy capacity optimization artificial noise affecting the secrecy capacity of the wireless communication system are described. The analysis and simulation results in practical environments show that the proposed method has a good performance on improving the secrecy capacity.

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Section: Communication Encryption Technologymentioning

confidence: 99%

The Secrecy Capacity Optimization Artificial Noise: A New Type of Artificial Noise for Secure Communication in MIMO System

Yin

et al. 2019

IEEE Access

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“…In [11], the authors investigated the impact of a hybrid spatial-temporal AN scheme on the security of MIMOME-OFDM systems. In [12], a secure scheme for combining temporal AN with secret key extraction is proposed. Different from the abovementioned works, we investigate the properties of temporal AN and analyze its dependency on the channel matrices which follow a circulant structure.…”

Section: Introductionmentioning

confidence: 99%

Securing OFDM-based wireless links using temporal artificial-noise injection

Marzban¹,

Shafie²,

Chabaan

et al. 2018

2018 15th IEEE Annual Consumer Communications &Amp; Networking Conference (CCNC)

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We investigate the physical layer security of wireless single-input single-output orthogonal-division multiplexing (OFDM) when a transmitter, which we refer to as Alice, sends her information to a receiver, which we refer to as Bob, in the presence of an eavesdropping node, Eve. To prevent information leakage, Alice sends an artificial-noise (AN) signal superimposed over her information signal. We investigate the impact of the channel delay spread, OFDM cyclic prefix, information/AN power allocation, and information and AN precoders design on the achievable average secrecy rate. We consider the two cases of known and unknown channel state information (CSI) at Alice. Furthermore, we compare both cases of per-sub-channel processing and joint sub-channels processing at Eve's receiver. Our numerical results show the gains of AN injection in terms of average secrecy rate for different OFDM operating conditions. Moreover, based on our new insights, we demonstrate that the AN-aided scheme is effective and achieves almost the same average secrecy rate as the full-CSI case without the need for Eve's instantaneous CSI at Alice.

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“…PHY security has been recently investigated for many transmission scenarios including those based on orthogonal-frequency division multiplexing (OFDM) modulation scheme and its multipleaccess technology, orthogonal-frequency division-multiple access (OFDMA), see e.g. [15]- [21].…”

mentioning

confidence: 99%

“…The problem formulation was then extended in [19] to investigate the PHY security of MIMOME-OFDM systems using a new hybrid spatial-temporal AN scheme. In [20] and [21], different AN precoding designs and power allocation schemes were investigated to enhance the ISR in OFDM systems.…”

mentioning

confidence: 99%

Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes

et al. 2019

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We investigate the physical layer security of uplink single-carrier frequency-division multipleaccess (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 block.We reduce the computational and storage requirements at Bob's receiver by assuming simple per-subchannel 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), multiuser minimum-mean-square-error (MMSE), and multiuser 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 Eves signal-to-noise ratio (SNR) 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 scheme that integrates temporal AN with channel-based secret-key extraction.

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A hybrid artificial-noise and secret-key scheme for securing OFDM transmissions in V2G networks

Cited by 4 publications

References 33 publications

The Secrecy Capacity Optimization Artificial Noise: A New Type of Artificial Noise for Secure Communication in MIMO System

The Secrecy Capacity Optimization Artificial Noise: A New Type of Artificial Noise for Secure Communication in MIMO System

Securing OFDM-based wireless links using temporal artificial-noise injection

Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes

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