Results 21 to 30 of about 1,127,374 (291)

Improvement of Noise Uncertainty and Signal-To-Noise Ratio Wall in Spectrum Sensing Based on Optimal Stochastic Resonance

open access: yesSensors, 2019
Noise uncertainty and signal-to-noise ratio (SNR) wall are two very serious problems in spectrum sensing of cognitive radio (CR) networks, which restrict the applications of some conventional spectrum sensing methods especially under low SNR ...
Di He   +4 more
doaj   +1 more source

User location privacy protection mechanism for location-based services

open access: yesDigital Communications and Networks, 2021
With the rapid development of the Internet of Things (IoT), Location-Based Services (LBS) are becoming more and more popular. However, for the users being served, how to protect their location privacy has become a growing concern.
Yan He, Jiageng Chen
doaj   +1 more source

Differentially Private Location Privacy-preserving Scheme withSemantic Location [PDF]

open access: yesJisuanji kexue, 2021
How to realize more reasonable noise addition in location differential privacy-preserving is a hot topic issue.However,adding the same amount of noise in different locations will result in the decrease of service availability and privacy preservation.To ...
ZHANG Xue-jun, YANG Hao-ying, LI Zhen, HE Fu-cun, GAI Ji-yang, BAO Jun-da
doaj   +1 more source

LocPriS: A Security and Privacy Preserving Location Based Services Development Framework [PDF]

open access: yes, 2010
With the ever increasing pervasiveness of devices with functionality to provide location based services comes the increased importance and reliance upon those services to provide user privacy and security.
Gareth Ayres   +3 more
core   +1 more source

Differential Privacy Preservation for Location Semantics

open access: yesSensors, 2023
With the rapid development of intelligent mobile terminals and communication technologies, location-based services (LBSs) have become an essential part of users’ lives. LBS providers upload and share the collected users’ location data.
Liang Yan   +5 more
doaj   +1 more source

A Novel Nonlinear Stochastic-Resonance-Enhanced Acceleration Data Processing Approach [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Smartphones are indispensable tools in modern social life, and they can be used for online shopping, electronic payment, gaming, and navigation. In particular, low-cost inertial measurement unit (IMU) sensors are widely integrated into smartphones, so ...
X. Gao   +5 more
doaj   +1 more source

Advanced location-based services

open access: yesComputer Communications, 2008
This special issue of Computer Communications presents state-of-the-art research and applications in the area of location-based services (LBS). Initial location-based services entered the market around the turn of the millennium and for the greater part appeared in the form of restaurant finders and tourist guides, which never gained widespread user ...
Miguel A. Labrador   +2 more
openaire   +3 more sources

GLPS: A Geohash-Based Location Privacy Protection Scheme

open access: yesEntropy, 2023
With the development of mobile applications, location-based services (LBSs) have been incorporated into people’s daily lives and created huge commercial revenues.
Bin Liu   +3 more
doaj   +1 more source

Optimal Heading Estimation Based Multidimensional Particle Filter for Pedestrian Indoor Positioning

open access: yesIEEE Access, 2018
Localization capability is a challenging task in global navigation satellite system-degraded or denied environments. Alternatively, today’s smartphones have an increased number of integrated sensors that can act as terminals for indoor personal ...
Ling Pei   +5 more
doaj   +1 more source

On inertial navigation and attitude initialization in polar areas

open access: yesSatellite Navigation, 2020
Inertial navigation and attitude initialization in polar areas become a hot topic in recent years in the navigation community, as the widely-used navigation mechanization of the local level frame encounters the inherent singularity when the latitude ...
Yuanxin Wu, Chao He, Gang Liu
doaj   +1 more source

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