Base-Station Random Placement Effect on the Accuracy of Ultrawideband Body-Centric Localization Applications

Bharadwaj, Richa; Swaisaenyakorn, Sritrija; Batchelor, John C.; Koul, Shiban K.; Alomainy, Akram

doi:10.1109/lawp.2018.2843881

Cited by 9 publications

(4 citation statements)

References 15 publications

(32 reference statements)

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“…The last term in (13) represents the self-effect in a frame that is obtained by using the fact that for the monobit ADC rn,i,j = ±1 and hence r2 n,i,j = 1. Obviously, the self-effect generates an imbalance in symbol recovery, prevents equal contribution of other N b −1 symbols in the reference enhancement process, and leads to considerable performance degradation.…”

Section: B Itrpcn Systemmentioning

confidence: 99%

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A Superior Iterative Transmitted-Reference Pulse Cluster Ultra-Wideband System for Ranging and Communication

Khani¹

2022

Preprint

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Ultra-wideband (UWB) signals penetrate obstacles, achieve centimeter-level ranging accuracy, and provide low-SNR communication. These features make UWB technology a good candidate for applications demanding accurate ranging and low-power communication. Iterative transmitted-reference pulse cluster (ITRPC) UWB system increases the data rate, the power efficiency, and the accuracy of the time-of-arrival (ToA) estimation compared to the conventional<br>transmitted-reference pulse cluster system. Among the ranging techniques, ToA or its simpler version time-difference-of-arrival scheme can perfectly exploit the ultra-wide bandwidth of UWB signals to attain centimeter-level ranging accuracy. Hence, this paper considers ToA estimation for ranging. This paper proposes a novel ITRPC system that significantly outperforms the existing one. Simulation results show that the proposed analog ITRPC receiver improves the ToA estimation by about 6 dB and enhances the symbol detection by about 1:5 dB. Moreover,<br>an accurate analysis is developed to calculate the bit-error probability of the proposed ITRPC receiver in the presence of noise and monobit quantization. To the best of our knowledge, accurate analysis of a data-aided pilot recovery system has not yet been reported in the literature. The<br>paper also covers some points for implementing and theoretical analysis of the proposed system.

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Section: B Itrpcn Systemmentioning

confidence: 99%

“…UWB signals penetrate obstacles [2]- [4] and provide centimeter-level positioning accuracy due to their wide bandwidth [5]- [12]. These features motivate the use of the IR-UWB technology for high-resolution positioning [13],…”

Section: Introductionmentioning

confidence: 99%

A Superior Iterative Transmitted-Reference Pulse Cluster Ultra-Wideband System for Ranging and Communication

Khani¹

2022

Preprint

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“…The Dilution of Precision (DOP), the third type of error, causes a less important global error on the position of the tag; it is negligible compared to the others type of errors. Richa Bharadwaj et al [63] investigated the effect of random placement of base stations on three-dimensional body-centric localization, and Andrew Fort et al [64] show that the body can have a small impact and the accuracy.…”

Section: Use and Interpretationmentioning

confidence: 99%

A New Dataset of People Flow in an Industrial Site with UWB and Motion Capture Systems

Delamare

Duval

Boutteau

2020

Sensors

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Improving performance and safety conditions in industrial sites remains a key objective for most companies. Currently, the main goal is to be able to dynamically locate both people and goods on the site. Security and access regulation to restricted areas are often ensured by doors or badge barriers and those have several issues when faced with people being in places they are not supposed to be in or even tools of objects being used incorrectly. In addition to this, a growing use of new devices requires precise information about their location in the environment such as mobile robots or drones. Therefore, it is becoming essential to have the tools to dynamically manage these flows of people and goods. Ultra-wide-band and motion capture solutions will be used to quickly identify people who may be in unauthorized areas or performing tasks which they have been uninstructed to do. In addition to the dynamic tracking of people, this also overcomes some issues associated with moving objects or tools around the production floor. We offer a new set of data that provides precise information on worker movement. This dataset can be used to develop new metrics regarding worker efficiency and safety.

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“…where k are the multipath delays relative to the first arriving multipath component and d is the separating distance between the Tx and Rx. The Kurtosis is a statistical parameter that indicates the fourth order moment of the received signal amplitude [3,[17][18].  is mathematically defined as follows:…”

Section: B Localization Algorithmmentioning

confidence: 99%

UWB Channel Characterization for Compact L-Shape Configurations for Body-Centric Positioning Applications

Bharadwaj

Swaisaenyakorn

Parini

et al. 2020

Antennas Wirel. Propag. Lett.

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This paper presents an analysis on the body-centric channel parameters classification for various compact 3 base station L-Shape configurations utilizing only a 2D-plane for installation. Four different L-Shape configurations (x-z/y-z plane) are studied (facing-front/side/back) by varying the position of the base stations in an indoor environment. Results and analyses highlight the variation of the channel parameters with respect to the orientation of the base station configurations and presence of the human subject. Channel parameters values (peak power delay profile (PDP)/rms delay spread /Kurtosis ) are reported for (line of sight (LOS): -65 to -50 dB/0.5-5 nsec/40-60) and (non-line of sight (NLOS): -80 to -65 dB/ 10-25 nsec/ 5-25). The 3D localisation accuracy obtained is highest (1-3 cm) for the x-z plane L-Shape configuration facing-front which has maximum number of LOS links (70 %).The accuracy decreases by 1-2 cm for the x-z plane L-Shape configuration facing-back due to increase in NLOS links (70 %) between the wearable antennas and the base stations.

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Base-Station Random Placement Effect on the Accuracy of Ultrawideband Body-Centric Localization Applications

Abstract: The version in the Kent Academic Repository may differ from the final published version. Users are advised to check http://kar.kent.ac.uk for the status of the paper. Users should always cite the published version of record.

Cited by 9 publications

References 15 publications

A Superior Iterative Transmitted-Reference Pulse Cluster Ultra-Wideband System for Ranging and Communication

A Superior Iterative Transmitted-Reference Pulse Cluster Ultra-Wideband System for Ranging and Communication

A New Dataset of People Flow in an Industrial Site with UWB and Motion Capture Systems

UWB Channel Characterization for Compact L-Shape Configurations for Body-Centric Positioning Applications

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