Multichannel Dynamic Directional Modulation with Software Defined Radio

Cabrera-Hernandez, Edith Annette; Granados, J; Tennant, A.

doi:10.23919/eucap48036.2020.9135816

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Conventional phased arrays use the suppression of the sidelobe level and formation of zero trap in the interference direction to achieve information transmission, but the effective information of signals in different directions is essentially the same. As an effective means of physical layer encryption, directional modulation [1][2][3][4][5] can achieve the desired direction transmits the correct communication signal and the signal in the non-desired direction is distorted irregularly. The transmitted signal is direction-dependent, which effectively prevents eavesdroppers in the non-desired direction from intercepting the communication signal.…”

Section: Introductionmentioning

confidence: 99%

Directional polarization modulation method based on time-modulated vector array

2023

Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023)

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In this paper, a directional polarization modulation method based on a time-modulated vector array is proposed for secure communication. The polarization state of the transmitted signal is used to represent the communication information to realize the directional polarization modulation in the desired direction. The vector antenna is divided into two sub-arrays. Each sub-array is controlled by a different time sequence to turn on the antenna. The correlation between the horizontal and vertical components of the polarization signal is destroyed. The communication direction is not affected, but the desired polarization state cannot be synthesized in the non-communication direction. The simulation results show that the desired polarization state is received in the communication direction, the polarization information of the signal in the non-communication direction is disturbed, and the information leakage from the time-modulated array due to sideband radiation is avoided.

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Section: Introductionmentioning

confidence: 99%

Directional polarization modulation method based on time-modulated vector array

2023

Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023)

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“…Although there are already works on FD jamming for secrecy purposes [ 18 , 19 ], as far as we are aware there is no practical proof-of-concept with a hardware/software implementation (the authors would like to disclose that this work has been presented, only in part, at the international conference CSNDSP2020 [ 20 ]). Rather, existing works with implementations of physical-layer security schemes tend to focus on secret-key agreement strategies [ 21 , 22 ], deriving security from signaling efforts such as beamforming, channel estimation and spread spectrum [ 23 , 24 , 25 ], or using the physical layer to authenticate users through radio signal analysis [ 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

SDR Proof-of-Concept of Full-Duplex Jamming for Enhanced Physical Layer Security

Silva

Gomes

Vilela

et al. 2021

Sensors

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In order to secure wireless communications, we consider the usage of physical-layer security (PLS) mechanisms (i.e., coding for secrecy mechanisms) combined with self-interference generation. We present a prototype implementation of a scrambled coding for secrecy mechanisms with interference generation by the legitimate receiver and the cancellation of the effect of self-interference (SI). Regarding the SI cancellation, four state-of-the-art algorithms were considered: Least mean square (LMS), normalized least mean square (NLMS), recursive least squares (RLS) and QR decomposition recursive least squares (QRDRLS). The prototype implementation is performed in real-world software-defined radio (SDR) devices using GNU-Radio, showing that the LMS outperforms all other algorithms considered (NLMS, RLS and QRDRLS), being the best choice to use in this situation (SI cancellation). It was also shown that it is possible to secure communication using only noise generation by the legitimate receiver, though a variation of the packet loss rate (PLR) and the bit error rate (BER) gaps is observed when moving from the fairest to an advantageous or a disadvantageous scenario. Finally, when noise generation was combined with the adapted scrambled coding for secrecy with a hidden key scheme, a noteworthy security improvement was observed resulting in an increased BER for Eve with minor interference to Bob.

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Energy-Efficient Dynamic Directional Modulation With Electrically Small Antennas

Narbudowicz

Zandamela

Marchetti

et al. 2022

Antennas Wirel. Propag. Lett.

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This letter proposes a compact and energy efficient Directional Modulation (DM) scheme for small and power constrained devices (e.g. Internet of Things wireless sensors). The scheme uses a uniform circular array of monopole antennas, with a single radiofrequency (RF) chain and antenna active at a time. The antennas can be located in close proximity, offering significant size reduction. Furthermore, the scheme was demonstrated to operate successfully with an array of 0.6  diameter. The system does not generate additional artificial noise, limiting interference to other systems. Finally, the antenna switching sequence can be randomly generated and without finetuned synchronization with the transmitter.

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Multichannel Dynamic Directional Modulation with Software Defined Radio

Cited by 3 publications

References 15 publications

Directional polarization modulation method based on time-modulated vector array

Directional polarization modulation method based on time-modulated vector array

SDR Proof-of-Concept of Full-Duplex Jamming for Enhanced Physical Layer Security

Energy-Efficient Dynamic Directional Modulation With Electrically Small Antennas

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