Joint Precoding for Active Intelligent Transmitting Surface Empowered Outdoor-to-Indoor Communication in mmWave Cellular Networks

Xie, Xie; He, Chen; Ma, Xue; Gao, Feifei; Han, Zhu; Wang, Z. Jane

doi:10.1109/twc.2023.3247906

Cited by 6 publications

(3 citation statements)

References 48 publications

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“…The challenges in solving this problem primarily arise from the intricate coupling of variables, the nonconvexity, and the varying dimensionality of the problem. This is distinct from existing works that considered only a single IOS [12]- [16], or where the number or locations of IOSs were not optimized [12]- [17]. • Our simulation results demonstrate that the proposed algorithms identify suitable numbers and deployment locations of IOSs that maximize the energy efficiency of the outdoor BS, while maintaining reliable downlink communications for all indoor users.…”

Section: Introductionmentioning

confidence: 68%

“…In [15], simulation results also demonstrated that replacing a part of a concrete wall with an IOS that refracts the mmWave signals from an outdoor BS to indoor users can significantly increase the coverage probability compared with a relay-aided counterpart. The authors in [16], maximized the downlink received data rate in an IOS-assisted outdoor-to-indoor mmWave cellular network by jointly optimizing the precoding matrices of both the BS and the IOS. Importantly, in [17], results showed that, for a fixed total number of reconfigurable elements, distributing them to multiple small IOSs evenly spaced at the same height on a selected wall resulted in a higher indoor coverage probability than deploying one large IOS on the same wall.…”

Section: Introductionmentioning

confidence: 99%

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Deployment Strategy of Intelligent Omni-surface-assisted Outdoor-to-Indoor Millimeter-wave Communications

Liu,

Chu,

Lopez-Perez

et al. 2023

Preprint

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Section: Introductionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Deployment Strategy of Intelligent Omni-surface-assisted Outdoor-to-Indoor Millimeter-wave Communications

Liu,

Chu,

Lopez-Perez

et al. 2023

Preprint

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show abstract

“…Taking the example of outdoorto-indoor communication scenarios in the millimeter-wave frequency band, signal attenuation through walls is significant, and the use of reflection RIS is insufficient to redirect signals around obstacles. The active refraction RIS proposed in [109] effectively addressed this issue, ensuring system performance while simultaneously reducing the number of transmissive-type elements. Before the concept of refraction RIS was introduced, there was a lack of research addressing the challenges in the blocked satellite communication scenario.…”

Section: ) Reflection Ris Refraction Ris and Star-rismentioning

confidence: 99%

Inspiring Physical Layer Security With RIS: Principles, Applications, and Challenges

Guo,

Lin,

et al. 2024

IEEE Open J. Commun. Soc.

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With the commercialization of the fifth generation mobile networks, researchers are now focusing on discovering the potential key techniques of the next generation mobile networks, which are expected to provide more accurate perception, lower latency, and higher network capacity. As the communication equipments increase exponentially, wireless transmission environment becomes more complex, leveraging wireless security challenges more and more severe, such as computationally powerful interception, intelligent malicious jamming, communication behavior monitoring. The physical layer security (PLS) techniques have been widely explored as a complement to traditional encryption schemes by exploiting the randomness characteristics of wireless channels to achieve the security from the physical layer. Additionally, reconfigurable intelligent surface (RIS) is considered as a key enabling technology for the six generation (6G) mobile networks, due to its ability to achieve the reconstruction of wireless channel, which is also regarded as a good match with PLS techniques for improving communication security. This paper presents a comprehensive review of the latest research on the integration of RIS and PLS. First, we introduce the principles of PLS from the development of secure communications and the basics of RIS based on the generalized Snell's law. Then, we categorize RIS according to different hardware architectures, of which the corresponding scenarios are also presented. Subsequently, we review recent works on RIS-assisted PLS in different communication networks, and classify the security scenarios in which RIS is integrated with various advanced communication technologies. Finally, we discuss the potential future research directions and challenges of RIS-aided PLS communications.INDEX TERMS Reconfigurable intelligent surfaces, physical layer security, secure communications, 6G.

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Resource Allocation for Geographical Fairness in Multi-RIS-Aided Outdoor-to-Indoor Communications

Zivuku,

Kisseleff,

Ntontin

et al. 2024

ICC 2024 - IEEE International Conference on Communications

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Joint Precoding for Active Intelligent Transmitting Surface Empowered Outdoor-to-Indoor Communication in mmWave Cellular Networks

Cited by 6 publications

References 48 publications

Deployment Strategy of Intelligent Omni-surface-assisted Outdoor-to-Indoor Millimeter-wave Communications

Deployment Strategy of Intelligent Omni-surface-assisted Outdoor-to-Indoor Millimeter-wave Communications

Inspiring Physical Layer Security With RIS: Principles, Applications, and Challenges

Resource Allocation for Geographical Fairness in Multi-RIS-Aided Outdoor-to-Indoor Communications

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