A review of wearable technologies for elderly care that can accurately track indoor position, recognize physical activities and monitor vital signs in real time

Z Wang, Z Yang, T Dong - Sensors, 2017 - mdpi.com
Rapid growth of the aged population has caused an immense increase in the demand for
healthcare services. Generally, the elderly are more prone to health problems compared to …

Indoor positioning technologies without offline fingerprinting map: A survey

B Jang, H Kim - IEEE Communications Surveys & Tutorials, 2018 - ieeexplore.ieee.org
Fingerprint-based wireless indoor positioning approaches are widely used for location-
based services because wireless signals, such as Wi-Fi and Bluetooth, are currently …

Evolution and impact of Wi-Fi technology and applications: A historical perspective

K Pahlavan, P Krishnamurthy - International Journal of Wireless …, 2021 - Springer
The IEEE 802.11 standard for wireless local area networking (WLAN), commercially known
as Wi-Fi, has become a necessity in our day-to-day life. Over a billion Wi-Fi access points …

[图书][B] Optical wireless communications: system and channel modelling with Matlab®

Z Ghassemlooy, W Popoola, S Rajbhandari - 2019 - taylorfrancis.com
The 2nd Edition of Optical Wireless Communications: System and Channel Modelling with
MATLAB® with additional new materials, is a self-contained volume that provides a concise …

Received-signal-strength-based indoor positioning using compressive sensing

C Feng, WSA Au, S Valaee… - IEEE Transactions on …, 2011 - ieeexplore.ieee.org
The recent growing interest for indoor Location-Based Services (LBSs) has created a need
for more accurate and real-time indoor positioning solutions. The sparse nature of location …

Artificial intelligence for 5G and beyond 5G: Implementations, algorithms, and optimizations

C Zhang, YL Ueng, C Studer… - IEEE Journal on Emerging …, 2020 - ieeexplore.ieee.org
The communication industry is rapidly advancing towards 5G and beyond 5G (B5G) wireless
technologies in order to fulfill the ever-growing needs for higher data rates and improved …

Secure k-nearest neighbor query over encrypted data in outsourced environments

Y Elmehdwi, BK Samanthula… - 2014 IEEE 30th …, 2014 - ieeexplore.ieee.org
For the past decade, query processing on relational data has been studied extensively, and
many theoretical and practical solutions to query processing have been proposed under …

Comprehensive analysis of distance and similarity measures for Wi-Fi fingerprinting indoor positioning systems

J Torres-Sospedra, R Montoliu, S Trilles… - Expert Systems with …, 2015 - Elsevier
Recent advances in indoor positioning systems led to a business interest in those
applications and services where a precise localization is crucial. Wi-Fi fingerprinting based …

Indoor location sensing using geo-magnetism

J Chung, M Donahoe, C Schmandt, IJ Kim… - Proceedings of the 9th …, 2011 - dl.acm.org
We present an indoor positioning system that measures location using disturbances of the
Earth's magnetic field caused by structural steel elements in a building. The presence of …

Accuracy of iPhone locations: A comparison of assisted GPS, WiFi and cellular positioning

PA Zandbergen - Transactions in GIS, 2009 - Wiley Online Library
The 3G iPhone was the first consumer device to provide a seamless integration of three
positioning technologies: Assisted GPS (A‐GPS), WiFi positioning and cellular network …