AnguLoc: Concurrent Angle of Arrival Estimation for Indoor Localization with UWB Radios

Heydariaan, Milad; Dabirian, Hossein; Gnawali, Omprakash

doi:10.1109/dcoss49796.2020.00028

Cited by 41 publications

(24 citation statements)

References 10 publications

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“…The research community has therefore dedicated multiple efforts to increase the scalability of UWB systems, from the perspective of high node density [25], or faster and concurrent ranging [19], [26], [27], [28], [29]. Figure 2 illustrates this concept.…”

Section: A Scalabilitymentioning

confidence: 99%

Applications of UWB Networks and Positioning to Autonomous Robots and Industrial Systems

Queralta

et al. 2021

2021 10th Mediterranean Conference on Embedded Computing (MECO)

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Ultra-wideband (UWB) technology is a mature technology that contested other wireless technologies in the advent of the IoT but did not achieve the same levels of widespread adoption. In recent years, however, with its potential as a wireless ranging and localization solution, it has regained momentum. Within the robotics field, UWB positioning systems are being increasingly adopted for localizing autonomous ground or aerial robots. In the Industrial IoT (IIoT) domain, its potential for ad-hoc networking and simultaneous positioning is also being explored. This survey overviews the state-of-the-art in UWB networking and localization for robotic and autonomous systems. We also cover novel techniques focusing on more scalable systems, collaborative approaches to localization, ad-hoc networking, and solutions involving machine learning to improve accuracy. This is, to the best of our knowledge, the first survey to put together the robotics and IIoT perspectives and to emphasize novel ranging and positioning modalities. We complete the survey with a discussion on current trends and open research problems.

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Section: A Scalabilitymentioning

confidence: 99%

Applications of UWB Networks and Positioning to Autonomous Robots and Industrial Systems

Queralta

et al. 2021

2021 10th Mediterranean Conference on Embedded Computing (MECO)

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“…Concurrency-based AOA or angle difference of arrival (ADOA) localization systems measure the phases of (quasi-)simultaneously arriving packets at the receiver. AnguLoc [10] builds an ADOA-based self-localization system by measuring PDOA of concurrently arriving packets at tags with two UWB radios running on the same clock. Further, another study introduces intra-anchor concurrency (packets concurrently transmitted by multiple radios on the same anchor node) and proposes to reduce the platform cost by measuring the PDOA of arriving signals from two UWB radios running on the same clock and builds a single-antenna AOA estimation system [11].…”

Section: B Uwb Concurrent Phase-based Localizationmentioning

confidence: 99%

“…It has been established in the literature that the path difference can be calculated based on the phase difference extracted from the CIR of each receiving chip. Further details can be found in [10], [11], [21].…”

Section: System Designmentioning

confidence: 99%

“…The main sources of errors are the CIR resolution and the TX scheduling uncertainty problem. • Phase-based localization problems: Initially, concurrent phase-based localization required the tags to have dualantennas resulting in an increased cost and complexity [10]. Later work proposed an architecture that uses dual-antenna anchors and single-antenna tags [11].…”

Section: Introductionmentioning

confidence: 99%

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Anchor-oriented Time and Phase-based Concurrent Self-localization using UWB Radios

Smaoui

Heydariaan

Gnawali

2021

2021 IEEE 46th Conference on Local Computer Networks (LCN)

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Positioning plays an important role in many IoT applications. Ultra-wideband (UWB)-based positioning is an alternative to GPS in indoor environments due to its multipath resilience and its accuracy and precision. In the presence of a large number of targets to localize, conventional UWB localization fails to provide a practical location update rate. UWB concurrency in conjunction with self-localization has been used in both time-based and phase-based localization making the targets to localize (tags), a relatively passive device with the sole role of receiving wireless packets and calculating its own location. More recently, phase-based concurrent angle estimation also offloaded the hardware complexity and cost to the anchors instead of the tags. In this work, our anchor-oriented approach combines inter-anchor and intra-anchor concurrency for phasebased localization but also allows time-based localization. Our experimental evaluation on a testbed consisting of Decawave platform shows that our technique is not only practical but also performant.

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“…In our work, we propose a new design to address the inefficiencies of THz rainbow, which we refer to as Spectrum Shaping (SSH). We adopt a well-known array design with antenna spacing that typically makes use of the time difference of arrival (TDoA) of signals between two antennas to estimate DoA in LoS communication [20], [21]. However, since we reduce the antenna spacing to less than a centimeter, measuring TDoA requires several Tera-samples per seconds which is not accessible.…”

mentioning

confidence: 99%

Spectrum Shaping For Multiple Link Discovery in 6G THz Systems

Hejazi¹,

Vuckovic²,

Rahnavard³

2021

Preprint

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This paper presents a novel antenna configuration to measure directions of multiple signal sources at the receiver in a THz mobile network via a single channel measurement. Directional communication is an intrinsic attribute of THz wireless networks and the knowledge of direction should be harvested continuously to maintain link quality. Direction discovery can potentially impose an immense burden on the network that limits its communication capacity exceedingly. To utterly mitigate direction discovery overhead, we propose a novel technique called spectrum shaping capable of measuring direction, power, and relative distance of propagation paths via a single measurement. We demonstrate that the proposed technique is also able to measure the transmitter antenna orientation. We evaluate the performance of the proposed design in several scenarios and show that the introduced technique performs similar to a large array of antennas while attaining a much simpler hardware architecture. Results show that the spectrum shaping with only two antennas placed 0.5 mm, 5 mm, and 1 cm apart performs direction of

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AnguLoc: Concurrent Angle of Arrival Estimation for Indoor Localization with UWB Radios

Cited by 41 publications

References 10 publications

Applications of UWB Networks and Positioning to Autonomous Robots and Industrial Systems

Applications of UWB Networks and Positioning to Autonomous Robots and Industrial Systems

Anchor-oriented Time and Phase-based Concurrent Self-localization using UWB Radios

Spectrum Shaping For Multiple Link Discovery in 6G THz Systems

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