Sources of ToA estimation error in LoS scenario

Marzieh Dashti*, Mir Ghoraishi, Katsuyuki Haneda, Jun Ichi Takada

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

4 Citations (Scopus)


Time-of-arrival (ToA) estimation technique used with ultra-wideband (UWB) transmission can be used for accurate indoor ranging. In the indoor multipath rich environment, these techniques often suffer from significant inaccuracy in ranging estimation. It is generally believed that the main cause of the ToA estimation error in the Line-of-sight (LoS) scenario is noise, usually modeled as white Gaussian noise. Through the established analytical framework for the analysis of the ToA estimation error, it is argued in this paper that the ToA estimation errors are caused by multipath interference and the fading statistics of the direct path. Therefore, variance of fading statistics of the direct path are considered on top of the noise variance for better prediction of the ToA estimation error. A comparison of predicted error with those obtained based on experimental measurements in an indoor environment confirms the validity of our analytical approach.

Original languageEnglish
Title of host publication2010 IEEE International Conference on Ultra-Wideband, ICUWB2010 - Proceedings
Number of pages4
Publication statusPublished - 17 Dec 2010
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Ultra-Wideband - Nanjing, China
Duration: 20 Sep 201023 Sep 2010


ConferenceIEEE International Conference on Ultra-Wideband
Abbreviated titleICUWB


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