Title :
Ultra-wideband ranging in Non-Line of Sight environments
Author :
Zhang, Hao ; Cui, Xue-rong ; Gulliver, T. Aaron
Author_Institution :
Dept. of Inf., Sci. & Eng., Ocean Univ. of China, Qingdao, China
Abstract :
To improve the precision of Energy Detection (ED) based ranging estimation, especially in Non-Line of Sight (NLOS) environments, a new threshold selection algorithm is proposed which is based on a joint metric using the skewness and maximum slope. The best thresholds for different SNR values are investigated and the effect of the integration period is examined. Comparisons with other ED based algorithms show that in NLOS environments, the joint metric provides higher precision in both high and low SNR environments.
Keywords :
signal detection; statistical analysis; time-of-arrival estimation; ultra wideband communication; ED-based ranging estimation; NLOS environments; SNR values; UWB technology; energy detection; nonline-of-sight environments; skewness-maximum slope joint metric; statistical parameters; threshold crossing TOA estimation; threshold selection algorithm; ultrawideband ranging; Distance measurement; Joints; Niobium; Signal processing algorithms; Signal to noise ratio; Time of arrival estimation;
Conference_Titel :
Communications, Computers and Signal Processing (PacRim), 2011 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4577-0252-5
Electronic_ISBN :
1555-5798
DOI :
10.1109/PACRIM.2011.6032920
