Device Diversity Effects on RF Fingerprinting Based 3D Positioning System
2018 8th International Conference on Localization and GNSS (ICL-GNSS), 2018
This paper presents the device diversity effects on Radio Frequency (RF) fingerprinting framework... more This paper presents the device diversity effects on Radio Frequency (RF) fingerprinting framework in the indoor environment for the three-dimensional positioning system. RF Fingerprinting positioning was studied inside of a multistory university building by devices from multiple manufacturers at different times. The goal was to study the effects of equipment heterogeneity on positioning accuracy in Wireless Local Area Network (WLAN). The performance evaluation demonstrates that RF fingerprints from homogeneous devices maintain better similarity in a crowdsourced database. By keeping the reference of user device information, better positioning accuracy can be achieved with less amount of training data.
Positioning Error Prediction and Training Data Evaluation in RF Fingerprinting Method
2019 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2019
Radio Frequency (RF) fingerprinting-based localization has become a research interest due to its ... more Radio Frequency (RF) fingerprinting-based localization has become a research interest due to its minimum hardware requirement and satisfiable positioning accuracy. However, despite the significant attention this topic has gained, most of the research focused on the calculation of position estimates. In this paper, we propose a simple and novel method that can be used as an indicator of fingerprinting positioning error. The method is based on cluster radius evaluation of multiple fingerprinting data during the test phase, which can be used by a Location Based Service (LBS) provider to predict the user position estimation accuracy. This method can be used effectively in real-time to predict the estimation error and thereby assists the LBS to offer a better quality of service. The cluster radius also reveals the quality of the recorded radio map.
Mondal, Riaz Uddin Radio Frequency Fingerprinting for Outdoor User Equipment Localization Jyväsky... more Mondal, Riaz Uddin Radio Frequency Fingerprinting for Outdoor User Equipment Localization Jyväskylä: University of Jyväskylä, 2017, 68 p. (+included articles) (Jyväskylä Studies in Computing ISSN 1456-5390; 271) ISBN 978-951-39-7284-4 (nid.) ISBN 978-951-39-7285-1 (PDF) Finnish summary Diss. The recent advancements in cellular mobile technology and smart phone usage have opened opportunities for researchers and commercial companies to develop ubiquitous low cost localization systems. Radio frequency (RF) fingerprinting is a popular positioning technique which uses radio signal strength (RSS) values from already existing infrastructures to provide satisfactory user positioning accuracy in indoor and densely built outdoor urban areas where Global Navigation Satellite System (GNSS) signal is poor and hard to reach. However a major requirement for the RF fingerprinting to maintain good localization accuracy is the collection and updating of large training database. The Minimization of D...
Abstract: Wimax (Worldwide Interoperability for Microwave Access) is a promising technology which... more Abstract: Wimax (Worldwide Interoperability for Microwave Access) is a promising technology which can offer high speed voice, video and data service up to the customer end. The aim of this paper is the performance evaluation of an Wimax system under different combinations of digital modulation (BPSK, QPSK, 4 QAM and 16 QAM) and different communication channels AWGN and fading channels (Rayleigh and Rician). And the Wimax system incorporates Reed Solomon (RS) encoder with Convolutional encoder with half ...
Wimax based systems, a segment of audio signal is used for analysis. The transmitted audio messag... more Wimax based systems, a segment of audio signal is used for analysis. The transmitted audio message is found to have retrieved effectively under noisy situation.
Wimax (Worldwide Interoperability for Microwave Access) is a promising technology which can offer... more Wimax (Worldwide Interoperability for Microwave Access) is a promising technology which can offer high speed voice, video and data service up to the customer end. The aim of this paper is the performance evaluation of an Wimax system under different combinations of digital modulation (BPSK, QPSK, 4 QAM and 16 QAM) and different communication channels AWGN and fading channels (Rayleigh and Rician). And the Wimax system incorporates Reed Solomon (RS) encoder with Convolutional encoder with half and two third rated codes in FEC channel coding. The simulation results of estimated Bit Error Rate (BER) displays that the implementation of interleaved RS code (255, 239, 8) with two third rated Convolutional code under BPSK modulation technique is highly effective to combat in the Wimax communication system. To complete this performance analysis in Wimax based systems, a segment of audio signal is used for analysis. The transmitted audio message is found to have retrieved effectively under noisy situation.
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