Results 151 to 160 of about 1,796,652 (193)
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Path loss model for crowd counting
2017 7th IEEE International Conference on Control System, Computing and Engineering (ICCSCE), 2017Crowd counting using wireless sensing relies on either participatory or non-participatory methods. In both cases, the algorithm developed would predict the number of people or their density within the area monitored, for the purpose of crowd safety and management. An alternative to such approaches is the path loss modeling. A model is proposed to count
Solahuddin Yusuf Fadhlullah +1 more
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Path-loss prediction model for microcells
IEEE Transactions on Vehicular Technology, 1999Empirical path-loss formulas for microcells in low-rise and high-rise environments are established from measurements conducted in the San Francisco Bay area. Using the 1-km intercepts and slope indexes of the least square fit lines to the measurements at cellular and personal communication services (PCS) frequencies for three base station heights ...
D. Har, H.H. Xia, H.L. Bertoni
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Millimeter waves channel measurements and path loss models
2012 IEEE International Conference on Communications (ICC), 2012This paper describes a measurement campaign performed in a modern building at the University of L'Aquila, Italy. Measurements are taken for two large bands around 60 GHz, i.e. 54–59 and 61–66 GHz. The channel probe is an ultrawideband (UWB) PN-sequence signal having a bandwidth of 1.2 GHz, which is up-converted to the 60 GHz band and finely tuned in ...
Piersanti S +2 more
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Path Loss Model for UAV-Assisted RFET
IEEE Communications Letters, 2018In this letter, we develop channel models for unmanned aerial vehicle-aided air-to-ground (AtG) radio frequency energy transfer (RFET). AtG path loss plays a key role in RFET-based recharging of field nodes. Representative field environments consist of different types of built-up areas, namely, suburban, urban, dense urban, urban high-rise, and rural ...
Suraj Suman, Sidharth Kumar, Swades De
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Adaptive Path-loss Model-based Indoor Localization
2008 Second International Conference on Electrical Engineering, 2008In this paper, we present new received signal strength (RSS)-based indoor localization system. In indoor environment, it is not desirable to use a theoretical signal propagation path-loss model. The signal propagation is severally affected by surrounded object, especially metallic object. In order to cope with this problem, we introduce a new path-loss
SangYoung Park, Hyo-Sung Ahn, Wonpil Yu
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SoutheastCon 2021, 2021
Low-cost wireless devices often rely on the log-distance path loss model for determining the distance between two devices based on radio signal strength. The log-distance path loss model relies on a properly determined path-loss exponent to produce accurate results; however, this variable can be difficult to obtain or estimate accurately, especially ...
David P. Grabowsky +2 more
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Low-cost wireless devices often rely on the log-distance path loss model for determining the distance between two devices based on radio signal strength. The log-distance path loss model relies on a properly determined path-loss exponent to produce accurate results; however, this variable can be difficult to obtain or estimate accurately, especially ...
David P. Grabowsky +2 more
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A new method for path-loss modeling
International Journal of Microwave and Wireless Technologies, 2019AbstractIn this paper, a new path-loss model for electromagnetic wave in an indoor multipath environment is proposed based on matching coefficient, polarization matching factor, and normalized field intensity direction function. This model is called the Friis-extension (Friis-EXT) model, because it operates as the Friis model under certain conditions ...
Qiang Li +4 more
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Bounding the error of path loss models
2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), 2011In this paper we analyze the efficacy of basic path loss models at predicting median path loss in urban environments. We attempt to bound the practical error of these models and look at how they may hinder practical wireless applications, and in particular dynamic spectrum access networks.
Caleb Phillips +2 more
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Path Loss Models for Wireless Cardiac RF Communication
IEEE Antennas and Wireless Propagation Letters, 2021In this letter, we propose fundamental path loss (PL) models which play vital roles in promoting the intraheart communication system design of future deeply implanted leadless pacemakers inside the cardiac chambers. Initially, employing a plane wave approach yields the attenuation of the electric field in homogeneous heart tissue, while a modified ...
Xiao Fang +5 more
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Path Loss Modeling for Outdoor UWB Channels
2018 IEEE 4th International Symposium in Robotics and Manufacturing Automation (ROMA), 2018In this paper, path loss has been analyzed and modeled based on the results obtained from an outdoor Ultrawideband (UWB) channel measurement. The measured channel is time varying and has the sparsity behavior, where most of the channel elements are zeros.
Yasser Zahedi +2 more
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