Double Reply ToA Algorithm Robust to a Timer Offset for a UWB System

Jae Ho HWANG  Jae Moung KIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.6   pp.2218-2221
Publication Date: 2009/06/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2218
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Keyword: 
UWB,  ranging,  ToA,  timer offset,  

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Summary: 
This paper deals with a new ranging algorithm in an ultra-wideband system. The conventional ToA algorithm determines the distance between devices by estimating the propagation time. However, due to different timer offsets in each device, the accuracy of this estimation can be compromised. In this paper, a double reply ToA algorithm is proposed to increase the ranging accuracy without increasing hardware complexity.