Journal ArticleDOI
CSI Amplitude Fingerprinting-Based NB-IoT Indoor Localization
TLDR
A CSI amplitude fingerprinting-based localization algorithm in Narrowband Internet of Things system, in which a centroid algorithm based on CSI propagation model is optimized and this algorithm can effectively reduce positioning error.Abstract:
With the proliferation of mobile devices, indoor fingerprinting-based localization has caught considerable interest on account of its high precision. Meanwhile, channel state information (CSI), as a promising positioning characteristic, has been gradually adopted as an enhanced channel metric in indoor positioning schemes. In this paper, we propose a CSI amplitude fingerprinting-based localization algorithm in Narrowband Internet of Things system, in which we optimize a centroid algorithm based on CSI propagation model. In particular, in the fingerprint matching, we utilize the method of multidimensional scaling (MDS) analysis to calculate the Euclidean distance and time-reversal resonating strength between the target point and the reference points and then employ the ${K}$ -nearest neighbor (KNN) algorithm for location estimation. By conjugate gradient method, moreover, we optimize the localization error of triangular centroid algorithm and combine the positioning result with MDS and KNN’s estimated position to get the final estimated position. Experiment results show that compared to some existing localization methods, our proposed algorithm can effectively reduce positioning error.read more
Citations
More filters
From RSSI to CSI: Indoor Localization via Channel Response, A survey on indoor localization using PHY-layer information
Yang Zheng,Zhou Zimu,Yunhao Liu +2 more
TL;DR: This article surveys the new trend of channel response in localization and investigates a large body of recent works and classify them overall into three categories according to how to use CSI, highlighting the differences between CSI and RSSI.
Journal ArticleDOI
A Survey on Energy Efficient Narrowband Internet of Things (NBIoT): Architecture, Application and Challenges
TL;DR: A profound view of IoT and NBIoT is presented, subsuming their technical features, resource allocation, and energy-efficiency techniques and applications, and two novel energy-efficient techniques "zonal thermal pattern analysis" and "energy-efficient adaptive health monitoring system" have been proposed towards green IoT.
Journal ArticleDOI
A Survey on Fusion-Based Indoor Positioning
TL;DR: This survey summarizes and analyzes the existing fusion-based positioning systems and techniques from three characteristics, which consists of three fusion characteristics: source, algorithm, and weight spaces, and discusses their lessons, challenges, and countermeasures.
Posted Content
Indoor Signal Focusing with Deep Learning Designed Reconfigurable Intelligent Surfaces
TL;DR: Realistic simulation results using ray tracing on a three dimensional indoor environment demonstrate that the proposed DNN-based configuration method exhibits its merits for all considered cases, and effectively increases the achievable throughput at the target user location.
Journal ArticleDOI
DEFT: A Distributed IoT Fingerprinting Technique
TL;DR: This paper proposes and develops a distributed device fingerprinting technique (DEFT), a distributed fingerprinting solution that addresses and exploits the presence of common devices, including new devices, across smart homes and enterprises in a network.
References
More filters
Proceedings ArticleDOI
RADAR: an in-building RF-based user location and tracking system
TL;DR: RADAR is presented, a radio-frequency (RF)-based system for locating and tracking users inside buildings that combines empirical measurements with signal propagation modeling to determine user location and thereby enable location-aware services and applications.
Journal ArticleDOI
An Overview: Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals
Tao Jiang,Yiyan Wu +1 more
TL;DR: Different OFDM PAPR reduction techniques are reviewed and analysis, based on computational complexity, bandwidth expansion, spectral spillage and performance, for multiuser OFDM broadband communication systems.
Journal ArticleDOI
From RSSI to CSI: Indoor localization via channel response
Zheng Yang,Zimu Zhou,Yunhao Liu +2 more
TL;DR: In this article, the authors survey the channel state information (CSI) in 802.11 a/g/n and highlight the differences between CSI and RSSI with respect to network layering, time resolution, frequency resolution, stability, and accessibility.
From RSSI to CSI: Indoor Localization via Channel Response, A survey on indoor localization using PHY-layer information
Yang Zheng,Zhou Zimu,Yunhao Liu +2 more
TL;DR: This article surveys the new trend of channel response in localization and investigates a large body of recent works and classify them overall into three categories according to how to use CSI, highlighting the differences between CSI and RSSI.
Indoor Positioning Techniques Based on Wireless LAN
TL;DR: This paper describes the techniques used and details the experimental results of the research, as well as describing the methods used and describing the techniques successful in relation to signal strength based positioning.
Related Papers (5)
Wi-Fi Fingerprint-Based Indoor Positioning: Recent Advances and Comparisons
Suining He,S.-H. Gary Chan +1 more
An Enhanced Indoor Positioning Algorithm Based on Fingerprint Using Fine-Grained CSI and RSSI Measurements of IEEE 802.11n WLAN.
Jingjing Wang,Joon Goo Park +1 more