Title
Implementation and Analysis of ISM 2.4 GHz Wireless Sensor Network Systems in Judo Training Venues.
Abstract
In this work, the performance of ISM 2.4 GHz Wireless Sensor Networks (WSNs) deployed in judo training venues is analyzed. Judo is a very popular martial art, which is practiced by thousands of people not only at the competition level, but also as part of physical education programs at different school levels. There is a great variety of judo training venues, and each one has specific morphological aspects, making them unique scenarios in terms of radio propagation due to the presence of furniture, columns, equipment and the presence of human beings, which is a major issue as the person density within this kind of scenarios could be high. Another key aspect is the electromagnetic interference created by other wireless systems, such as WiFi or other WSNs, which make the radio planning a complex task in terms of coexistence. In order to analyze the impact of these features on the radio propagation and the performance of WSNs, an in-house developed 3D ray launching algorithm has been used. The obtained simulation results have been validated with a measurement campaign carried out in the sport facilities of the Public University of Navarre. The analysis is completed with the inclusion of an application designed to monitor biological constants of judokas, aimed to improve their training procedures. The application, that allows the simultaneous monitoring of multiple judokas (collective workouts) minimizing the efforts of the coach and medical supervisor, is based on commercial off-the-shelf products. The presented assessment of the presence of interfering wireless systems and the presence of human beings within judo training venues shows that an in-depth radio planning is required as these issues can have a great impact in the overall performance of a ISM 2.4 GHz WSN, affecting negatively the potential applications supported by wireless channel.
Year
DOI
Venue
2016
10.3390/s16081247
SENSORS
Keywords
Field
DocType
judo,wireless sensor networks,ray launching,interference
Supervisor,Telecommunications,Physical education,Wireless,Electromagnetic interference,Communication channel,Martial arts,Engineering,Wireless sensor network,Radio propagation
Journal
Volume
Issue
Citations 
16
8.0
3
PageRank 
References 
Authors
0.42
9
6
Name
Order
Citations
PageRank
Peio Lopez-Iturri13910.22
Erik Aguirre2569.90
Leyre Azpilicueta330.42
José Javier Astrain48418.39
Jesús E. Villadangos59220.12
Francisco Falcone6329.67