Device-Free Localization Using Millimeter-Wave Double-Directional Channel Sounding Measurements

Kim, Minseok; Miyake, Yuto; Ikegami, Togo; Tsukada, Hibiki; Kumakura, Keiichiro

doi:10.23919/eucap53622.2022.9769204

Cited by 5 publications

(6 citation statements)

References 4 publications

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“…For validation of the DFL function, mm-wave doubledirectional channel were conducted in an empty room as shown in Fig. 4, where A,B,C, and D indicate the anchor locations [14]. Owing to hardware limitations, we measured the channels for the links ( 4 2 = 6) individually using a single Tx a single Rx as in Fig.…”

Section: Multilink Measurementmentioning

confidence: 99%

“…It is obvious that device-free localization (DFL) methods are preferred for smart home/building applications. Radio tomographic imaging (RTI), which visualizes the change in path gain owing to shadowing by people on a map using dense wireless links within a radio frequency (RF) sensor network, is a promising method for DFL [3]- [14].…”

Section: Introductionmentioning

confidence: 99%

“…The authors previously proposed a novel RTI method, namely Multipath-RTI [12]- [14], based on millimeter-wave (mm-wave) radio systems, such as 5G mobile and WiGig WLAN systems, which currently attract considerable attention. Because mm-wave radio systems can perform high-resolution channel acquisition in the delay and angle domains owing to ultra-wideband signaling and beamforming, the RSS change in each multipath can be individually utilized.…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents the signal processing of Multipath-RTI, and its practical implementation using a double-directional channel sounder based on the authors' previous work [14]. The main contributions of this study are as follows:…”

Section: Introductionmentioning

confidence: 99%

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Multipath-RTI: Millimeter-Wave Radio Based Device-Free Localization

Ikegami,

Kim,

Miyake

et al. 2024

Preprint

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This paper presents a novel localization technique—Multipath-radio tomographic imaging (RTI)—based on millimeterwave (mm-wave) radio systems, such as 5G mobile and WiGig LAN systems. Because of their high delay and angle resolutions, mm-wave radio systems can realize highly accurate device-free localization (DFL) for smart home/smart building applications. They can thus easily separate the multipath components. The Multipath-RTI can drastically reduce the number of anchor nodes using virtual nodes created by multipaths. This paper established the signal processing procedure for RTI image generation and position estimation using Multipath-RTI. Then, a practical signal processing scheme, ray-tracing-assisted Multipath-RTI, is presented, and the DFL results obtained by multilink double-directional channel sounding measurements are shown. Here, the position estimation errors in the measurements were less than 0:5 m for all target positions. Furthermore, the empirical position estimation errors for a single target under various conditions obtained by simulations were less than 0:5 m in 96.2 % and 88.0 % of the areas in an L-shaped room and a room with an obstacle in the center, respectively. The position estimation accuracy for multiple targets was also evaluated, where, for example, the errors for three targets were less than 0.1 m at 50 % probability with failure rates of less than 20 %.

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Section: Multilink Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multipath-RTI: Millimeter-Wave Radio Based Device-Free Localization

Ikegami,

Kim,

Miyake

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Multipath-RTI: Millimeter-Wave Radio Based Device-Free Localization

Kim

2023

Preprint

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<p>This paper presents a novel localization technique—Multipath-radio tomographic imaging (RTI)—based on millimeterwave (mm-wave) radio systems, such as 5G mobile and WiGig LAN systems. Because of their high delay and angle resolutions, mm-wave radio systems can realize highly accurate device-free localization (DFL) for smart home/smart building applications. They can thus easily separate the multipath components. The Multipath-RTI can drastically reduce the number of anchor nodes using virtual nodes created by multipaths. This paper established the signal processing procedure for RTI image generation and position estimation using Multipath-RTI. Then, a practical signal processing scheme, ray-tracing-assisted Multipath-RTI, is presented, and the DFL results obtained by multilink double-directional channel sounding measurements are shown. Here, the position estimation errors in the measurements were less than 0:5 m for all target positions. Furthermore, the empirical position estimation errors for a single target under various conditions obtained by simulations were less than 0:5 m in 96.2 % and 88.0 % of the areas in an L-shaped room and a room with an obstacle in the center, respectively. The position estimation accuracy for multiple targets was also evaluated, where, for example, the errors for three targets were less than 0.1 m at 50 % probability with failure rates of less than 20 %.</p>

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