IRShield: A Countermeasure Against Adversarial Physical-Layer Wireless Sensing

Staat, Paul; Mulzer, Simon; Roth, Stefan; Moonsamy, Veelasha; Heinrichs, Markus; Kronberger, Rainer; Sezgin, Aydin; Paar, Christof

doi:10.1109/sp46214.2022.9833676

Cited by 26 publications

(16 citation statements)

References 29 publications

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“…Moreover, unlike when using active components, passive reflecting surfaces are not expected to create severe EMFE, but naturally regulatory constraints must always be upheld. These features are also key to increasing the secrecy of communication, as demonstrated in [32], or decreasing inter-cell interference in certain areas. Lastly, they can be seamlessly integrated into various sensing services in the scope of 6G joint communication and sensing (JCAS) and, therefore, e.g., improve positioning service availability and quality [31].…”

Section: Methods For Extending Mobile Radio Network Coverage To Black...mentioning

confidence: 99%

“…As a consequence, it is underlined that our proposed ray-tracing assisted reflector geometry design stage in Fig. 2 is needed to validate the conformance of particularly thin reflector patterns (e.g., sub-1 cm protrusion to match other prototypes as studied in [32,37,39,49]) with design requirements (e.g., main reflection beam orientation, beamwidth, etc.). As we showed that there is a good match between real reflection behavior and far-field pattern simulations, cf.…”

Section: ) On the Far-field Characteristics Of Modular Reflectorsmentioning

confidence: 99%

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Holistic Enlightening of Blackspots With Passive Tailorable Reflecting Surfaces for Efficient Urban mmWave Networks

et al. 2023

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Mitigating outage regions is of particular interest for emerging millimeter-wave (mmWave) and future sub-terahertz frequency cellular networks. Whereas smart radio environments based on metasurfaces constitute a key concept for 6G research, current networks cannot be served as new control procedures are required. Although small prototypes are already emerging, costs will be higher for the dense deployment of reconfigurable intelligent surfaces (RISs) than for passive reflectors. It is argued that passive reflectors can be used to effectively, cost-efficiently, and permanently boost connectivity in well-defined service areas. Leveraging the advantages of 3D printing and spray-painted conductive varnish, we introduce the Holistic Enlightening of bLackspots with passIve reflectOr moduleS (HELIOS) approach which is characterized by its scalability and parametrizability to meet the reflection requirements derived from sophisticated network planning. These slim reflectors meet the core criteria of ease of installation and minimal visual impact on the cityscape, which are imperative for market success. Our measurements-based comparison of prototypes against typical metal/aluminum reflectors shows at least equal reflectivity at a higher practicality of the proposed manufacturing process. The conducted simulation study validates the modular reflector pattern design process and finds a trade-off between the reflector efficiency and the minimum protrusion depth, which relates to the number of modules in the designated mounting area. An urban ray-tracing simulationbased case study further underlines the high applicability of the proposed approach, with the growth of the beyond line-of-sight (LOS) connectivity region being nearly twice as large for a site-tailored HELIOS configuration as for a simple reflector plate.INDEX TERMS Millimeter-wave, passive reflector, beyond line-of-sight connectivity, additive manufacturing.

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Section: Methods For Extending Mobile Radio Network Coverage To Black...mentioning

confidence: 99%

Section: ) On the Far-field Characteristics Of Modular Reflectorsmentioning

confidence: 99%

Holistic Enlightening of Blackspots With Passive Tailorable Reflecting Surfaces for Efficient Urban mmWave Networks

et al. 2023

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“…The use of 1-bit RIS is prevalent in existing prototype implementations, including those presented in [16], [21], [31]- [34]. Similarly, in our design, it is necessary to quantify the continuous optimal solution obtained by RGD or PCM algorithms.…”

Section: Phase Shift Quantification Scheme For 1-bit Rismentioning

confidence: 99%

RIS-aided Wireless Communication in Real-world: Antennas Design, Prototyping, Beam Reshape and Field Trials

Xiong¹,

Zhang²,

Dong³

et al. 2023

Preprint

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In this study, we investigate the effectiveness of reconfigurable intelligent surfaces (RIS) in enhancing wireless signal coverage through field trials. Specifically, we design a prototype consisting of 160 RIS cells operating in the Sub-6 Gigahertz band, and develop a wireless control scheme and novel beamforming algorithms for the RIS. To evaluate the effectiveness of the RIS prototype and algorithm, we conduct experiments in multi-block RIS and multi-hop RIS scenarios. Our results demonstrate that the RIS can provide an average signal power gain of 20 dB when using a pair of horn antennas as transceiver terminals, and an average gain of over 5 dB when using a Wi-Fi router and a mobile device as transceiver terminals. Furthermore, RIS can improve the data transmission rate, jitter delay, packet loss rate, and other communication performance indices.

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“…[118] shows that the Cramér‐Rao lower bound can be achieved for the least‐squares estimation. Moreover, a line of studies [ 104,117,119,127 ] examine the channel estimation task from a compressed sensing perspective, aiming to find a sparse representation of the cascaded channels. Notice that none of the above methods accounts for challenges #2 and #3.…”

Section: Irs Empowered Performance Optimizationmentioning

confidence: 99%

“…This discrete constraint on

bold-italicθ

, however, results in a huge challenge in optimizing phase shifts. Because of the wide belief that the discrete IRS beamforming problem is NP‐hard, those works aimed at the global optimum resort to the exponential‐time algorithms such as the exhaustive search [ 117 ] and the branch‐bound method [ 118,119 ] . But the recent work [ 120 ] shows a somewhat surprising result that the binary beamforming problem of the single‐user case can be globally solved in linear time.…”

Section: Irs Empowered Performance Optimizationmentioning

confidence: 99%

Real‐World Wireless Network Modeling and Optimization: From Model/Data‐Driven Perspective

Yang

Zhang

Ren

et al. 2022

Chinese J of Electronics

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With the rapid development of the fifthgeneration wireless communication systems, a profound revolution in terms of transmission capacity, energy efficiency, reliability, latency, and connectivity is highly expected to support a new batch of industries and applications. To achieve this goal, wireless networks are becoming extremely dynamic, heterogeneous, and complex. The modeling and optimization for the performance of realworld wireless networks are extremely challenging due to the difficulty to predict the network performance as a function of network parameters, and the prohibitively huge number of parameters to optimize. The conventional network modeling and optimization approaches rely on drive test, trial‐and‐error, and engineering experience, which are labor intensive, error‐prone, and far from optimal. On the other hand, while the research community has spent significant efforts in understanding the fundamental limits of radio channels and developing physical layer techniques to operate close to it, very little is known about the performance limits of wireless networks, where millions of radio channels interact with one another in complex manners. This paper reviews the very recent mathematical and learning based techniques for modeling and optimizing the performance of real‐world wireless networks in five aspects, including channel modeling, user demand and traffic modeling, throughput modeling and prediction, network parameter optimization, and IRS empowered performance optimization, and also presents the corresponding notable performance gains.

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IRShield: A Countermeasure Against Adversarial Physical-Layer Wireless Sensing

Cited by 26 publications

References 29 publications

Holistic Enlightening of Blackspots With Passive Tailorable Reflecting Surfaces for Efficient Urban mmWave Networks

Holistic Enlightening of Blackspots With Passive Tailorable Reflecting Surfaces for Efficient Urban mmWave Networks

RIS-aided Wireless Communication in Real-world: Antennas Design, Prototyping, Beam Reshape and Field Trials

Real‐World Wireless Network Modeling and Optimization: From Model/Data‐Driven Perspective

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