Understanding factors influencing the performance of a wi fi fingerprinting system
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Understanding factors influencing the performance of a wi fi fingerprinting system
Understanding factors influencing the performance of a wi fi fingerprinting system
Understanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system genieurwissenschaflen (Dr.-Ing.)Submitted to theFaculty of Electrical Engineering / Computer Science, University of KasselByM.Sc. Ngoc Doan DuongDay of Defence: 25,h March 2019AbstractLocation information plays a vital role in today’s society. People usually carry their mobile devices everywhere the Understanding factors influencing the performance of a wi fi fingerprinting system y go to benefit from real-lime location services; the location of the device is the location of users. The focus of positioning services is shifting fUnderstanding factors influencing the performance of a wi fi fingerprinting system
rom outdoors to indoors. Technological services which depend on indoor locations arc increasing in popularity. Wi-Fi fingerprinting is a promising tecUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system i-Fi received signal strength. It provides useful information applicable in the implementation of a reliable, consistent Wi-Fi fingerprinting system that takes into account factors such as accuracy, recognition rale, and energy consumption.Different techniques and algorithms have been used in develo Understanding factors influencing the performance of a wi fi fingerprinting system ping a Wi-Fi fingerprinting system. Several studies have been done to analyze factors that influence the performance of a Wi-Fi fingerprinting system.Understanding factors influencing the performance of a wi fi fingerprinting system
New technologies in wireless networks may provide useful features to improve the performance of Wi-Fi fingerprinting systems but may also give rise tUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system fingerprinting that have not been thoroughly investigated.Tn this Ph.D. thesis. Ĩ performed various experiments to investigate factors influencing signal strength of a Wi-1 i network and the performance of a Wi-Fi fingerprinting system. 1 compared the fluctuation of 2.4 and 5 GHz bands by considerin Understanding factors influencing the performance of a wi fi fingerprinting system g factors such as how the presence of people in office environments such as corridors, halls, and office rooms affects Wi-Fi signals. The performanceUnderstanding factors influencing the performance of a wi fi fingerprinting system
of a Wi-Fi fingerprinting system using the 2.4 and 5 GHz Wi-Fi signal is also evaluated in terms of accuracy, recognition rate, and power consumption Understanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system was also be investigated in this thesis. The statistical ANOVA and t-test were used to validate the influence of small-scale fading and device heterogeneity on Wi-Fi signal strength. T analyzed the distribution and the fluctuation of measured Wi-Fi data and then compared the performance of the Wi-F Understanding factors influencing the performance of a wi fi fingerprinting system i fingerprinting system WHERE under the influence of those factors. Consequently, tire results showed that the Wi-Fi fingerprinting system achieves siUnderstanding factors influencing the performance of a wi fi fingerprinting system
milar accuracy when using 2.4 GHzand 5 GHz bands. However, the recognition rate of a system using signals of 5 GHz was found to be higher than that usUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system ference between mean values of Wi-Fi signals measured over a short distance. The Wi-Fi signal strength measured at the same location by different devices is also different. The recognition rate decreases from 100% to 47.76% when heterogeneous devices arc used in the training phase and the positionin Understanding factors influencing the performance of a wi fi fingerprinting system g phase. Tn addition to device heterogeneity, small-scale fading was also found to impact fingerprints of the measured positions in such a way that deUnderstanding factors influencing the performance of a wi fi fingerprinting system
vices that were only one centimeter apart were erroneously recorded as different locations. To mitigate the influence of small-scale fading, the colleUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system nition to 92.13%.The results of this Ph.D. thesis help to better understand the different characteristics of the 2.4 and 5 GHz Wi-Fi signals as well as the influence of different factors on the performance of a Wi-1 i fingerprinting system, rhe selection of frequency bands in Wi-Fi fingerprinting ap Understanding factors influencing the performance of a wi fi fingerprinting system proaches may not influence the results of accuracy but may influence the recognition rate and the power consumption of the system, hl this regard, a IUnderstanding factors influencing the performance of a wi fi fingerprinting system
radc-olT of the performance should be considered when designing an indoor localization system using Wi-Fi fingerprinting. I propose to record the motiUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system ted data was more reliable than when the measurement devices arc kept stationary. These understandings provide useful information for the design and implementation of Wi-11 fingerprinting systems.iiZusammenfassungStandortinformationen spielen ill der heutigen Gesellschaft eine entscheidende Rolle. M Understanding factors influencing the performance of a wi fi fingerprinting system enschen tragen ihrc mobilen Geriite ill der Regel ilberall bin mit sich. um von Echtzeit-Ortungsdicnsten ZU profit icrcn. Hierbei reprásentiert der StUnderstanding factors influencing the performance of a wi fi fingerprinting system
andort des Gerais den Standort des Benutzers. Der Fokus von Positionierungsdiensten verlagert sich mehr und mehr von Outdoor-Lokalisation zur Indoor-LUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system cchcndcr Ansatz. wclchcr fur Indoor-Lokalisation vcrwendet werden kann. Ziel dieser Dissertation ist es. das Verstăndnis uber verschiedene F.intlussfaktoren auf die Wi-Fi Signalstărke 7U erhõhen. Diese Dissertation liefert niitzliche Tnformationen fur die Tmplementierung eines zuverlassigen. konsist Understanding factors influencing the performance of a wi fi fingerprinting system enten Wi-Fi-Fingerprinting Systems, wobei Faktoren wie Genauigkeit, F.rkennungsrate und Fnergieverbrauch be rucks ichtigt werden.Bci der Enlwicklung vUnderstanding factors influencing the performance of a wi fi fingerprinting system
on Wi-1 i-1 •ingerprinling Syslcmcn warden vcrschiedene Techniken und Algorithmen verwendet. Verschiedene Publikationen baben Faktoren unlcrsucht, wclUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system die r.eistung cincs Wi-Fi-1 ingerprinling Systems ZU vcrbcsscm. stcllcn aber auch ncuc llenuisforderungen dar. Trotz intensive!’ Forschung in diesem Bereich existieren weiterhin Faktoren. welche das Wi-Fi-Signal und die T.eistung des Wi-Fi-Fingerprinting Systems beeintlussen aber nocli nicht vollst Understanding factors influencing the performance of a wi fi fingerprinting system andig untersucbt wurden.Tn dieser Doktorarbeit habe ich verschiedene F.xperimente durchgetuhrt. urn verscbiedene Faktoren ZU untersuchen. welche FinflUnderstanding factors influencing the performance of a wi fi fingerprinting system
uss auf die Signalstãrke eines Wi-Fi-Nctzworks sowie auf die Leistung eines Wi-l’i-l'ingerprinling Systems habcn. Daiur vcrglich ieh die I'hiktualion Understanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system e, Wi-Fi Signale beeinflussen. Wciterhin wurde die Leistung eines Wi-Fi-Fingerprinting Systems mit 2.4 und 5 GHz Wi-Fi-Signalen in Bezug auf Genauigkeit. Erkennungsrate und Stromverbrauch beim Scannen von Netzwerken evaluiert. Der Einiluss von Small-Scale Fading und Gerăteheterogenităt auf die Wi-Fi Understanding factors influencing the performance of a wi fi fingerprinting system -Signalstarke und das Wi-Fi-Fingerprinting wurde in dieser Arbeit ebenialls untersucht. Um den Einiluss von Small-Scale Fading und der GerăteheterogenUnderstanding factors influencing the performance of a wi fi fingerprinting system
itãt auf die Wi-Fi-Signalstarke ZU validiereniiiwurden Varianzanalysen und t-Tests verwendet. Ich analysierte die Verteilung und die Fluktuation der gUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system e zeigen. dass das Wi-Fi-Fingeiprinting System einc ahnliche Genauigkeit erreicht. wenn 2.4 GHz und 5 GHz Bander verwendet werden. Die Erkennungsrate eines Systems mit 5 GHz Signaled war jedoch holier als ein System mil 2.4 GHz. AuBerdem verbraucht das Scannen von 2,4-GHz-Netzwerken weniger Energie Understanding factors influencing the performance of a wi fi fingerprinting system als das Scannen von 5-GHz-Netzwerken. Die statislischen Auswcrlungcn zcigen lerncr. dass dcr Mitlclwcrl dcr Wi-Fi-Signalc. welchc uber verschicdcnc. kUnderstanding factors influencing the performance of a wi fi fingerprinting system
urze Distanzcn gcmesscn wurde, variicrt. Die am gleichen Ort von verschicdcncn Geratcn gemessene Wi-Fi-Signalstarkc isl cbcnfalls unterschiedlich. DieUnderstanding Factors Influencing thePerformance of a Wi-Fi Fingerprinting SystemDissertation lor the acquisition of the academic degreeDoktor der Ing Understanding factors influencing the performance of a wi fi fingerprinting system ăteheterogenitãt hatte auch Small-Scale Fading cincn Linfluss die lingcrabdriickc der gcmcsscncn Positional! in der An. dass Gerate. welche lediglich wenige Zentimeter voneinander entfernt waren. (lalschlicherwcise) als unlerschicdlichc Positional! belraclilel warden. Um den Linlluss von Small-Scale Understanding factors influencing the performance of a wi fi fingerprinting system Fading ZU minimieren. kann die Sammlung von Wi-Fi-Daten. die uber eine kleine Fntfernung gesammelt werden. verwendet werden. urn den Fingerabdruck deUnderstanding factors influencing the performance of a wi fi fingerprinting system
s Standorts ZU erzeugen. dutch welche die Frkennungsrate auf 92.13% verbessert wild.Die F.rgebnisse dieser Doktorarbeit helfen. die unterschiedlichenGọi ngay
Chat zalo
Facebook