Improving Security of THz Communication with Intelligent Reflecting Surface

Ning, Boyu; Chen, Zhi; Chen, Wenjie; Li, Lingxiang

doi:10.1109/gcwkshps45667.2019.9024636

Cited by 31 publications

(25 citation statements)

References 19 publications

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“…An AO-SDR based method is adopted and similar results are achieved as in [41]. Similarly, the authors in [43] considered the joint optimization problem but for the Terahertz (THz) communications scenarios. An AO-based algorithm is developed, where for a given beamforming matrix, the optimal RIS's phase shifts is obtained by leveraging the characteristics of the THz channel.…”

Section: ) Single Bob and Evementioning

confidence: 92%

Smart and Secure Wireless Communications via Reflecting Intelligent Surfaces: A Short Survey

Almohamad

Tahir

Al‐Kababji

et al. 2020

IEEE Open J. Commun. Soc.

110

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With the emergence of the internet of things (IoT) technology, wireless connectivity should be more ubiquitous than ever. In fact, the availability of wireless connection everywhere comes with security threats that, unfortunately, cannot be handled by conventional cryptographic solutions alone, especially in heterogeneous and decentralized future wireless networks. In general, physical layer security (PLS) helps in bridging this gap by taking advantage of the fading propagation channel. Moreover, the adoption of reconfigurable intelligent surfaces (RIS) in wireless networks makes the PLS techniques more efficient by involving the channel into the design loop. In this paper, we conduct a comprehensive literature review on the RIS-assisted PLS for future wireless communications. We start by introducing the basic concepts of RISs and their different applications in wireless communication networks and the most common PLS performance metrics. Then, we focus on the review and classification of RIS-assisted PLS applications, exhibiting multiple scenarios, system models, objectives, and methodologies. In fact, most of the works in this field formulate an optimization problem to maximize the secrecy rate (SR) or secrecy capacity (SC) at a legitimate user by jointly optimizing the beamformer at the transmitter and the RIS's coefficients, while the differences are in the adopted methodology to optimally/sub-optimally approach the solution. We finalize this survey by presenting some insightful recommendations and suggesting open problems for future research extensions.

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Section: ) Single Bob and Evementioning

confidence: 92%

Smart and Secure Wireless Communications via Reflecting Intelligent Surfaces: A Short Survey

Almohamad

Tahir

Al‐Kababji

et al. 2020

IEEE Open J. Commun. Soc.

110

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show abstract

“…Under the hypothesis of rank-one THz channel, the transmit beamforming at the base station (BS) and the phase shift matrix at the IRS are jointly optimized with transmit power and discrete phase-shift constraints [56]. Similarly, to enhance the security of the IRS assisted THz system, the work in [57] aims to maximize the secrecy rate with low complexity and high secure performance. In addition, the alternating optimization algorithm is also used to iteratively design the precoder and discrete phase-shifts matrix [58].…”

Section: Irs Empowered Secure Thz Communicationsmentioning

confidence: 99%

Towards intelligent reflecting surface empowered 6G terahertz communications: A survey

et al. 2021

Self Cite

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Terahertz (THz) communications have been widely envisioned as a promising enabler to provide adequate bandwidth and achieve ultra-high data rates for sixth generation (6G) wireless networks. In order to mitigate blockage vulnerability caused by serious propagation attenuation and poor diffraction of THz waves, an intelligent reflecting surface (IRS), which manipulates the propagation of incident electromagnetic waves in a programmable manner by adjusting the phase shifts of passive reflecting elements, is proposed to create smart radio environments, improve spectrum efficiency and enhance coverage capability. Firstly, some prospective application scenarios driven by the IRS empowered THz communications are introduced, including wireless mobile communications, secure communications, unmanned aerial vehicle (UAV) scenario, mobile edge computing (MEC) scenario and THz localization scenario. Then, we discuss the enabling technologies employed by the IRS empowered THz system, involving hardware design, channel estimation, capacity optimization, beam control, resource allocation and robustness design. Moreover, the arising challenges and open problems encountered in the future IRS empowered THz communications are also highlighted. Concretely, these emerging problems possibly originate from channel modeling, new material exploration, experimental IRS testbeds and intensive deployment. Ultimately, the combination of THz communications and IRS is capable of accelerating the

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“…The security 1584 rate of this system is optimized by the jointinty optimizing the beam forming at base station and discrete phase shift at IRS. Ning et al [36] uses active beam former and passive phase shifter at the base station and at IRS respectively for maximizing the secrecy rate. To tackle the non convex problem, a joint design is proposed to optimize the phase shifter and beam former.…”

Section: Irs For Secure Communications In Thz Bandmentioning

confidence: 99%

A review on intelligent reflecting surface-based terahertz communication

Patel

Shukla

2022

IJEECS

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<span>Terahertz (THz)-band communications can be considered as the new frontline for future-generation wireless communication systems as it has a wider bandwidth in comparison to microwave and mmwave communications. It also promises to integrate the wide range of diverse applications. Because of high path loss and narrow spreading of THz waves, the transmission is extremely sensitive and signal coverage is a critical problem. To overcome this, an intelligent reflecting surface (IRS), has received great interest which steers the beams of THz waves by regulating the phase shifts to alleviate blockage and improve the coverage capability. In this paper, the role of IRS in conjunction with the THz communication has been discussed. Further, challenges and research directions of IRS for terahertz communication are also discussed.</span>

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Improving Security of THz Communication with Intelligent Reflecting Surface

Cited by 31 publications

References 19 publications

Smart and Secure Wireless Communications via Reflecting Intelligent Surfaces: A Short Survey

Smart and Secure Wireless Communications via Reflecting Intelligent Surfaces: A Short Survey

Towards intelligent reflecting surface empowered 6G terahertz communications: A survey

A review on intelligent reflecting surface-based terahertz communication

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