scholarly journals Ranging Performance of the IEEE 802.15.4a UWB Standard under FCC/CEPT Regulations

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Thomas Gigl ◽  
Florian Troesch ◽  
Josef Preishuber-Pfluegl ◽  
Klaus Witrisal
Keyword(s):  
Wireless Sensor Networks ◽  
High Accuracy ◽  
Ultra Wideband ◽  
Wireless Sensor ◽  
Operating Range ◽  
Link Budget ◽  
Coherent Receivers ◽  
Ieee 802.15.4A ◽  
Energy Detectors ◽  
Pulse Spacing

The IEEE 802.15.4a standard for wireless sensor networks is designed for high-accuracy ranging using ultra-wideband (UWB) signals. It supports coherent and noncoherent (energy detector) receivers, thus the performance-complexity-tradeoff can be decided by the implementer. In this paper, the maximum operating range and the maximum allowed pathloss are analyzed for ranging and both receiver types, under FCC/CEPT regulations. The analysis is based on the receiver working points and a link budget calculation assuming a frees-pace pathloss model. It takes into consideration the parameters of the preamble, which influence the transmit power allowed by the regulators. The best performance is achieved with the code sequences having the longest pulse spacing. Coherent receivers can achieve a maximum operating range up to several thousand meters and energy detectors up to several hundred meters.

Experimental Study of Ultra Wideband Interference Over Wireless Sensor Networks

2014 ◽  
Vol 20 (2) ◽  
pp. 426-429
Author(s):  
Toni Koskinen ◽  
Arto Toppinen ◽  
Matti Sipilä ◽  
Marek Milosz
Keyword(s):  
Experimental Study ◽  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Ultra Wideband ◽  
Wireless Sensor ◽  
Wideband Interference

scholarly journals Hexahedral Localization (HL): A Three-Dimensional Hexahedron Localization Based on Mobile Beacons

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Linlan Liu ◽  
Haili Zhang ◽  
Xiaotian Geng ◽  
Xin Shu
Keyword(s):  
Wireless Sensor Networks ◽  
Three Dimensional ◽  
High Accuracy ◽  
Wireless Sensor ◽  
Localization Accuracy ◽  
Localization Scheme ◽  
Future Work ◽  
Range Free ◽  
Mobile Beacons ◽  
Dimensional Range

In wireless sensor networks, localization is one of the fundamental technologies and is essential to its applications. In this paper, we propose a three-dimensional range-free localization scheme named hexahedral localization. In the scheme, the space is divided into a lot of hexahedrons. Then, all the unknown nodes are located by utilizing the perpendicular properties of the trajectory. The contribution of our scheme can be summarized into two points. First, it fills the gap of shortage of three-dimensional localization based on mobile beacons. Second, it brings in the outstanding localization accuracy. The simulation result reveals that this localization scheme has the relative high accuracy. At the end of the paper, the performance and error of our scheme are analyzed in aim of improving in the future work.

scholarly journals Time of Arrival Based on Chirp Pulses as a means to Perform Localization in IEEE 802.15.4a Wireless Sensor Networks

2010 ◽  
Vol 10 (2) ◽  
pp. 65-70 ◽  
Author(s):  
A. Van NIEUWENHUYSE ◽  
J. WYFFELS ◽  
J.-P. GOEMAERE ◽  
L. De STRYCKER ◽  
B. NAUWELAERS
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Time Of Arrival ◽  
Ieee 802.15.4A
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