Results 61 to 70 of about 66,735 (286)

Measurement of UWB signal path loss and center frequency selection in underground coal mines

open access: yesGong-kuang zidonghua, 2023
The deployment of UWB, 5G and WiFi6 systems underground in coal mines has problems such as multiple base stations, multiple transmission cables, multiple power supply equipment, high system costs, and heavy maintenance workload.
LYU Ruijie
doaj   +1 more source

Multitasking Smart Intestinal Capsule Robot: A Cutting‐Edge Platform for Sampling, Diagnosis, and Therapy

open access: yesAdvanced Robotics Research, Volume 2, Issue 2, April 2026.
Gut microbiota and biomarkers are linked to diseases like neurological disorders and metabolic syndromes. Ingestible capsule robots enable minimally invasive gut health assessment. This article proposes a promising direction for the advancement of capsule robots, integrating in situ sampling, real‐time diagnostics, and personalized therapy.
Xizong Chen   +3 more
wiley   +1 more source

Two-Stage Code Acquisition Employing Search Space Reduction and Iterative Detection in the DS-UWB Downlink [PDF]

open access: yes, 2008
—In this paper we propose and investigate an iterative code acquisition scheme assisted by both search space reduction and iterative Massage Passing (MP), which was designed for the Direct Sequence-Ultra WideBand (DS-UWB) DownLink (DL).
Seunghwan Won   +3 more
core   +1 more source

UWB-based Indoor Positioning System with Infinite Scalability

open access: yes, 2023
The ultra-wide band radio technology (UWB) is currently considered the de-facto standard for implementing precise indoor positioning systems. Several positioning algorithms are currently being investigated for finding the best implementation in terms of ...
Luca Santoro (11196648)   +3 more
core   +1 more source

Unequal Land and Water Changes Between Nations Driven by International Boundary Rivers: Mapping and Temporal Analysis of Shared Borders Between China and Its Neighbors

open access: yesEarth's Future, Volume 14, Issue 4, April 2026.
Abstract International Boundary Rivers (IBRs), as natural political frontiers, constitute one‐third of China's land borders. However, a lack of systematic monitoring has led to a limited understanding of the distribution of these politically significant rivers and the potential risks posed by their dynamic nature.
Shengquan Lu   +5 more
wiley   +1 more source

TRust Your GENerator (TRYGEN): Enhancing Out-of-Model Scope Detection

open access: yesAI
Recent research has drawn attention to the ambiguity surrounding the definition and learnability of Out-of-Distribution recognition. Although the original problem remains unsolved, the term “Out-of-Model Scope” detection offers a clearer perspective. The
Václav Diviš   +2 more
doaj   +1 more source

3D As‐Built Environments in Extended Reality Applications: A Systematic Review

open access: yesThe Photogrammetric Record, Volume 41, Issue 194, April/June 2026.
This systematic review identifies BIM and game engines as the primary tools for integrating 3D as‐built environments into XR. While multi‐sensor fusion and multimodal interaction enhance immersion, persistent challenges like manual modeling and bandwidth limitations continue to hinder full ecosystem maturation.
Jesús Balado   +4 more
wiley   +1 more source

Transmission of 1.2 Gbit/s polarization-multiplexed UWB signals in PON with 0.76 bit/s/Hz spectral efficiency [PDF]

open access: yes, 2009
The transmission of 1.2 Gbit/s Polarization-Multiplexed OFDM-based UWB signals in PON is proposed and experimentally demonstrated.
Roberto Llorente   +7 more
core   +1 more source

Homogeneous Observer‐Based Affine Formation Tracking

open access: yesInternational Journal of Robust and Nonlinear Control, Volume 36, Issue 5, Page 2692-2704, 25 March 2026.
ABSTRACT This article addresses the control of mobile agents, termed followers, to track a time‐varying affine formation specified by a set of leaders. We present a distributed hierarchical method composed of a homogeneous high‐order sliding mode observer and a tracking controller. The observer estimates the followers' target trajectories from neighbor
Rodrigo Aldana‐López   +3 more
wiley   +1 more source

Cognitive Power Allocation for Multicarrier Based Ultra Wide Band (UWB) Wireless Systems [PDF]

open access: yes, 2012
This thesis presents a study of Distributed Cognitive Power Allocation for multicarrier based Ultra Wide Band (UWB) wireless systems in a point to point configuration as a way of reducing the coexistence interference for low power emission wireless ...
Jin, Ruofan
core  

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