Title :
Error distribution of range measurements in Wireless Sensor Networks (WSNs)
Author :
Rasool, Imtiaz ; Maheshwari, Harish Kumar ; Kemp, A.H.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK
Abstract :
Previous work predominantly assumes that the pdf of range measurements exhibit Gaussian characteristics. The objective of this paper is to scrutinize this assumption for different environments. Experiments are performed in both outdoor and indoor environments with Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) conditions using IEEE 802.15.4 compliant devices. These devices consist of a low-cost 2.45 GHz chipset and use Time-of-Flight (TOF) measurement technique for range estimation. Our results and analysis are based on four different statistical Goodness-of-Fit (GOF) tests i.e., a graphical technique, Linear correlation coefficient, Anderson-Darling, and Chi-squared for investigating the Gaussianity of range measurements.
Keywords :
Zigbee; statistical testing; wireless mesh networks; Anderson-darling; Gaussian characteristics; IEEE 802.15.4 compliant devices; NLOS conditions; WSN; error distribution; frequency 2.45 GHz; graphical technique; line-of-sight conditions; linear correlation coefficient; nonline-of-sight condition; range estimation; range measurements; statistical goodness-of-fit test; time-of-flight measurement technique; wireless sensor networks; Correlation; Delay; Estimation; Gaussian distribution; Optical fibers; Receivers; Wireless sensor networks; Anderson-Darling (A2); Chi-squared (χ2); Gaussianity; Goodness-of-Fit (GOF) tests; Linear correlation coefficient (γ); Localization; Quantile-Quantile (Q-Q) plots; Range estimation; Time-of-Flight (TOF); WSNs;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2010 IEEE 21st International Symposium on
Conference_Location :
Instanbul
Print_ISBN :
978-1-4244-8017-3
DOI :
10.1109/PIMRC.2010.5671597
