Experimental Analysis of Transmit-power for IEEE 802.15.4a UWB Ranging under Multipath Environment

• Published in: IET Conference Proceedings p. 60G
• Main Authors: Tingcong Ye, Walsh, M, O'Flynn, B
• Format: Conference Proceeding
• Language: English
• Published: Stevenage, UK IET 2012; The Institution of Engineering & Technology
• Subjects: Electromagnetic compatibility and interference; Radio links and equipment; Signal processing and detection; IEEE 802.15.4a UWB; time-of-arrival estimation; real indoor environments; multipath components; ultra wideband communication; path detection technique; accuracy; transmit-power; connectivity; SNR; UWB ranging refinement scheme design; timing error; nonlinear relationship; real multipath environment; stability; pulse duration; anechoic chambers (electromagnetic); ranging parameters; TOA; multipath channels; multipath propagation; UWB ranging system; personal area networks; experimental analysis; low sampling rate problem; time of arrival; anechoic chamber
• ISBN: 9781849196130; 1849196133
• DOI: 10.1049/ic.2012.0205

Multi-path propagation introduces challenges for UWB ranging due to a large number of multi-path components and relatively long excess delays compared to the transmitted pulse duration. This paper focuses on experimental analysis for various transmit-powers, IEEE 802.15.4a UWB based ranging problem under multi-path environment. A two-step leading path detection technique is presented that robustly mitigates the timing error caused by low sampling rate problem for time of arrival (TOA) based UWB ranging system. Experimental results recorded from both anechoic chamber and real indoor environments show that non-linear relationship can be evaluated between various transmit-powers and ranging parameters such as SNR, connectivity, stability and accuracy. These relationships supply plentiful reference for UWB ranging refinement scheme design under real multi-path environment. (6 pages)