Results 31 to 40 of about 2,923 (181)
Sensing Coverage Prediction for Wireless Sensor Networks in Shadowed and Multipath Environment
The Scientific World Journal, 2013 Sensing coverage problem in wireless sensor networks is a measure of quality of service (QoS). Coverage refers to how well a sensing field is monitored or tracked by the sensors.
Sushil Kumar, D. K. Lobiyal
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Space and Frequency Diversity Characterization of Mobile GNSS Receivers in Multipath Fading Channels
Tsinghua Science and Technology, 2020 Diversity reception of multipath Global Navigation Satellte System (GNSS) signals offers a new insight into carrier phase-based high-precision positioning.
Peirong Fan, Xiaowei Cui, Mingquan Lu
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Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics
Advanced Science, EarlyView.This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li +8 more
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Channel Modelling and Performance Analysis of the Near Space based on the DS Signal System
MATEC Web of Conferences, 2016 In order to describe the near space communication channel efficiently and analyse the the reasons that cause quality deterioration of ground-to-air communication link, design the Channel modelling program of the near space and establish the near space ...
Sun Ke, Hou Xiaomin, Zhao Qiang
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Single‐Sensor Vibration Sensing in Anisotropic Composites Enabled by Disordered Metasurfaces
Advanced Science, EarlyView.This work develops a single‐sensor vibration sensing (SSVS) framework that integrates disordered metasurfaces with compressive sensing. Comprehensive numerical and experimental validations demonstrate that, by manipulating anisotropic guided wave propagation through metasurfaces, the proposed SSVS framework enables high‐fidelity multi‐source vibration ...
Jianjie Zhang +6 more
wiley +1 more source
A high order statistics based multipath interference detection method
IET Communications, 2021 Multipath interference commonly exists in wireless communication, navigation and radar systems, which may cause severe signal fading and bit error rate (BER) performance degradation.
Yafeng Zhan, Guanming Zeng, Chaowei Duan
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Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
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A fading filter design for multipath Rayleigh fading simulation and comparisons to other simulators [PDF]
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008 A low-complexity high performance Rayleigh fading simulator, an ARMA(3,3) model, is proposed. This proposed method is a variant of the method of filtering of the white Gaussian noise where the filter design is accomplished in the analog domain and transferred into digital domain.
Ali Arsal, Serdar Özen
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT In current dynamic time history assessment protocols, ground motion recordings are mostly oriented along fixed sensor directions. Consequently, the orientation of the principal resultant of rupture energy, which may control the maximum structural demand, remains undefined, precluding consistent correlation with physically detrimental ...
Santiago Londono‐Lopez +4 more
wiley +1 more source
Journal of Telecommunications and Information Technology, 2019 In this paper, the product of three random variables (RVs) will be considered. Distribution of the product of independent random variables is very important in many applied problems, including wireless relay telecommunication systems.
Dragana S. Krstic +4 more
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