Clock Offset Compensation in Ultra-Wideband Ranging

Bin ZHEN; Huan-Bang LI; Ryuji KOHNO

doi:10.1093/ietfec/e89-a.11.3082

Clock Offset Compensation in Ultra-Wideband Ranging

Bin ZHEN, Huan-Bang LI, Ryuji KOHNO

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Accurate and low-cost sensor localization is critical for deployment of wireless sensor networks. Distance between Ultra-wideband (UWB) sensor nodes can be obtained by measuring round trip flying time through two-way ranging (TWR) transaction. Because of difficulties in synchronization and channel estimate, the response delay of UWB node is the order of milliseconds. Comparing with the nanosecond propagation delay, relative clock offset between UWB nodes introduces big error in TWR. This paper presents the management of relative clock offset in TWR transaction. The relative clock offset between sensors is estimated by comparing the claimed and real frame duration. Simulation in the UWB channel model shows the relative clock offset after compensation can be reduced to less than 2 ppm.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.11 pp.3082-3088

Publication Date: 2006/11/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e89-a.11.3082

Type of Manuscript: Special Section PAPER (Special Section on Wide Band Systems)

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Bin ZHEN, Huan-Bang LI, Ryuji KOHNO, "Clock Offset Compensation in Ultra-Wideband Ranging" in IEICE TRANSACTIONS on Fundamentals, vol. E89-A, no. 11, pp. 3082-3088, November 2006, doi: 10.1093/ietfec/e89-a.11.3082.
Abstract: Accurate and low-cost sensor localization is critical for deployment of wireless sensor networks. Distance between Ultra-wideband (UWB) sensor nodes can be obtained by measuring round trip flying time through two-way ranging (TWR) transaction. Because of difficulties in synchronization and channel estimate, the response delay of UWB node is the order of milliseconds. Comparing with the nanosecond propagation delay, relative clock offset between UWB nodes introduces big error in TWR. This paper presents the management of relative clock offset in TWR transaction. The relative clock offset between sensors is estimated by comparing the claimed and real frame duration. Simulation in the UWB channel model shows the relative clock offset after compensation can be reduced to less than 2 ppm.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.11.3082/_p

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@ARTICLE{e89-a_11_3082,
author={Bin ZHEN, Huan-Bang LI, Ryuji KOHNO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Clock Offset Compensation in Ultra-Wideband Ranging},
year={2006},
volume={E89-A},
number={11},
pages={3082-3088},
abstract={Accurate and low-cost sensor localization is critical for deployment of wireless sensor networks. Distance between Ultra-wideband (UWB) sensor nodes can be obtained by measuring round trip flying time through two-way ranging (TWR) transaction. Because of difficulties in synchronization and channel estimate, the response delay of UWB node is the order of milliseconds. Comparing with the nanosecond propagation delay, relative clock offset between UWB nodes introduces big error in TWR. This paper presents the management of relative clock offset in TWR transaction. The relative clock offset between sensors is estimated by comparing the claimed and real frame duration. Simulation in the UWB channel model shows the relative clock offset after compensation can be reduced to less than 2 ppm.},
keywords={},
doi={10.1093/ietfec/e89-a.11.3082},
ISSN={1745-1337},
month={November},}

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TY - JOUR
TI - Clock Offset Compensation in Ultra-Wideband Ranging
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3082
EP - 3088
AU - Bin ZHEN
AU - Huan-Bang LI
AU - Ryuji KOHNO
PY - 2006
DO - 10.1093/ietfec/e89-a.11.3082
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2006
AB - Accurate and low-cost sensor localization is critical for deployment of wireless sensor networks. Distance between Ultra-wideband (UWB) sensor nodes can be obtained by measuring round trip flying time through two-way ranging (TWR) transaction. Because of difficulties in synchronization and channel estimate, the response delay of UWB node is the order of milliseconds. Comparing with the nanosecond propagation delay, relative clock offset between UWB nodes introduces big error in TWR. This paper presents the management of relative clock offset in TWR transaction. The relative clock offset between sensors is estimated by comparing the claimed and real frame duration. Simulation in the UWB channel model shows the relative clock offset after compensation can be reduced to less than 2 ppm.
ER -