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WIFI-based received signal strength indicator (RSSI) fingerprinting is widely used for indoor localization due to desirable features such as universal availability, privacy protection, and low deployment cost. The key of RSSI fingerprinting is to construct a trustworthy RSSI map, which contains the measurements of received access point (AP) signal strengths at different calibration points. Location...
Indoor localization has greatly leveraged applications regarding to location based service (LBS), which witnessed ever-increasing impact on human life. Among the existing localization solutions, WIFI-based received signal strength index (RSSI) fingerprinting is widely used due to desirable features such as universal availability, privacy protection, and low deployment cost. However, to build a robust,...
Axisymmetry and planar reflective symmetry properties of mechanical components can be used throughout a product development process to restructure the modeling process of a component, simplify the computation of tool path trajectories, assembly trajectories, etc. To this end, the restructured geometric model of such components must be at least as accurate as the manufacturing processes used to produce...
Many wireless network protocols have to deal with inaccurate information due to the lack of sufficient knowledge of the scenario or other limitations. Therefore, in this paper, we study information accuracy and investigate its quantitative impact on wireless network performance. First, we introduce an entropy-performance framework to model the relationship between wireless network performance and...
In this paper, we propose a hybrid cargo-level tracking system for logistics. We highlight the special system requirements, discuss the design issues and identify the design principles. Then we propose an innovative hybrid system. As far as we know, this is the first system that exploits both infrastructure-based and infrastructure-less positioning schemes for practical cargo-level tracking. Compared...
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