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Found 25 papers, 2 papers with code
LEO Satellite and RIS: Two Keys to Seamless Indoor and Outdoor Localization
By leveraging the strong signal reception of the LEO satellite signals and capitalizing on the radio environment-reshaping capability of RISs, the integration of these two technologies presents a vision of a future where localization services transcend existing constraints.
RIS Position and Orientation Estimation via Multi-Carrier Transmissions and Multiple Receivers
In this paper, we consider a static user equipped with an RIS and study the RIS localization problem (i. e., joint three-dimensional position and orientation estimation), when operating in a system comprising a single-antenna transmitter and multiple synchronized single-antenna receivers with known locations.
Fundamental Performance Bounds for Carrier Phase Positioning in Cellular Networks
The carrier phase of cellular signals can be utilized for highly accurate positioning, with the potential for orders-of-magnitude performance improvements compared to standard time-difference-of-arrival positioning.
Uplink Joint Positioning and Synchronization in Cell-Free Deployments with Radio Stripes
Radio stripes (RSs) is an emerging technology in beyond 5G and 6G wireless networks to support the deployment of cell-free architectures.
RISs and Sidelink Communications in Smart Cities: The Key to Seamless Localization and Sensing
A smart city involves, among other elements, intelligent transportation, crowd monitoring, and digital twins, each of which requires information exchange via wireless communication links and localization of connected devices and passive objects (including people).
ESPRIT-Oriented Precoder Design for mmWave Channel Estimation
We consider the problem of ESPRIT-oriented precoder design for beamspace angle-of-departure (AoD) estimation in downlink mmWave multiple-input single-output communications.
RIS-Aided Monostatic Sensing and Object Detection with Single and Double Bounce Multipath
We propose a framework for monostatic sensing by a user equipment (UE), aided by a reconfigurable intelligent surface (RIS) in environments with single- and double-bounce signal propagation.
RIS-Enabled SISO Localization under User Mobility and Spatial-Wideband Effects
Specifically, we observe that the state of the user with a high speed (42 m/s) can be estimated virtually with the same accuracy as a static user.
Bayesian Integrity Monitoring for Cellular Positioning -- A Simplified Case Study
Bayesian receiver autonomous integrity monitoring (RAIM) algorithms are developed for the snapshot cellular positioning problem in a simplified one-dimensional (1D) linear Gaussian setting.
Joint User Localization and Location Calibration of A Hybrid Reconfigurable Intelligent Surface
The recent research in the emerging technology of reconfigurable intelligent surfaces (RISs) has identified its high potential for localization and sensing.
Radio Localization and Sensing -- Part II: State-of-the-art and Challenges
This letter is part of a two-letter tutorial on radio localization and sensing, with a focus on mobile radio systems, i. e., 5G and beyond.
Radio Localization and Sensing -- Part I: Fundamentals
This letter is part of a two-letter tutorial on radio localization and sensing, with focus on mobile radio systems in 5G mmWave and beyond.
Cramér-Rao Bound Analysis of Radars for Extended Vehicular Targets with Known and Unknown Shape
In this work, we first devise a mathematically tractable analytical model for a vehicle with arbitrary shape, modeled as an extended target parameterized by the center position, the orientation (heading) and the perimeter contour.
RIS-aided Joint Localization and Synchronization with a Single-Antenna Receiver: Beamforming Design and Low-Complexity Estimation
In this paper, a novel low-complexity method for joint localization and synchronization based on an optimized design of the base station (BS) active precoding and RIS passive phase profiles is proposed, for the challenging case of a single-antenna receiver.
MmWave 6D Radio Localization with a Snapshot Observation from a Single BS
Accurate and ubiquitous localization is crucial for a variety of applications such as logistics, navigation, intelligent transport, monitoring, control, and also for the benefit of communications.
RIS-Enabled Self-Localization: Leveraging Controllable Reflections With Zero Access Points
In this paper, we introduce a novel use-case of the RIS technology in radio localization, which is enabling the user to estimate its own position via transmitting orthogonal frequency-division multiplexing (OFDM) pilots and processing the signal reflected from the RIS.
Optimal Spatial Signal Design for mmWave Positioning under Imperfect Synchronization
We consider the problem of spatial signal design for multipath-assisted mmWave positioning under limited prior knowledge on the user's location and clock bias.
Semi-Passive 3D Positioning of Multiple RIS-Enabled Users
In this work, we study the application of RIS in a multi-user passive localization scenario, where we have one transmitter (Tx) and multiple asynchronous receivers (Rxs) with known locations.
3D Orientation Estimation with Multiple 5G mmWave Base Stations
We show that the received signals from several base stations, having known positions, can be used to estimate the unknown orientation of the user.
SISO RIS-Enabled Joint 3D Downlink Localization and Synchronization
We consider the problem of joint three-dimensional localization and synchronization for a single-input single-output (SISO) system in the presence of a reconfigurable intelligent surface (RIS), equipped with a uniform planar array.
Signal Processing Information Theory Information Theory
RIS-aided Joint Localization and Synchronization with a Single-Antenna MmWave Receiver
However, for MISO systems synchronization cannot be performed jointly with user localization unless two-way transmissions are used.
Near-field Localization with a Reconfigurable Intelligent Surface Acting as Lens
Exploiting wavefront curvature enables localization with limited infrastructure and hardware complexity.
Signal Processing Information Theory Information Theory
Downlink Single-Snapshot Localization and Mapping with a Single-Antenna Receiver
5G mmWave MIMO systems enable accurate estimation of the user position and mapping of the radio environment using a single snapshot when both the base station (BS) and user are equipped with large antenna arrays.
6G White Paper on Localization and Sensing
This white paper concludes by highlighting foundational research challenges, as well as implications and opportunities related to privacy, security, and trust.
Massive MIMO Channel Estimation with Low-Resolution Spatial Sigma-Delta ADCs
We consider channel estimation for an uplink massive multiple-input multiple-output (MIMO) system where the base station (BS) uses an array with low-resolution (1-2 bit) analog-to-digital converters and a spatial Sigma-Delta ($\Sigma\Delta$) architecture to shape the quantization noise away from users in some angular sector.
