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Radio Channel Measurements in 868 MHz Off-Body Communications in a Ferry Environment

Abstrakt

In this paper, a characterization of the 868 MHz off-body radio channel in BANs is presented. Measurements were carried out in a ferry environment using a specific set-up. A method for path loss using radio distance measurements (RDMs) was developed. It allows to automate the measurements process and make it independent from the variable speed of a moving person. Based on the observed path loss as a function of distance, the obtained values are divided into Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) conditions. The results show that, in LOS, the smallest path loss mean value (67.79 dB) and standard deviation (3.87 dB) were obtained for the placement of the mobile node (MN) on the chest (TOF) of a moving person in an approaching scenario (APR). In NLOS, the lowest path loss mean value (71.57 dB) was also obtained for the same scenario. In other scenarios, more than approximately 5 dB higher path loss mean value was obtained.

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Kategoria:
Aktywność konferencyjna
Typ:
materiały konferencyjne indeksowane w Web of Science
Tytuł wydania:
The IRACON 4th MC meeting and 4th technical meeting strony 1 - 5
Język:
angielski
Rok wydania:
2017
Opis bibliograficzny:
Cwalina K., Ambroziak S., Rajchowski P., Correia L..: Radio Channel Measurements in 868 MHz Off-Body Communications in a Ferry Environment, W: The IRACON 4th MC meeting and 4th technical meeting, 2017, European Cooperation in Science and Technology,.
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.23919/ursigass.2017.8104968
Weryfikacja:
Politechnika Gdańska

wyświetlono 139 razy

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