What question did this study set out to answer?

To evaluate theoretical performance limits and practical time-of-arrival (TOA) estimation techniques for ultrawide bandwidth ranging in harsh multipath and interference conditions.

February 1, 2009Proceedings of the IEEEOpen Access

Ranging With Ultrawide Bandwidth Signals in Multipath Environments

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Authors

DDDavide DardariLaboratori Guglielmo Marconi (Italy)ACAndrea ContiUniversity of Ferrara UFUlric J. FernerMassachusetts Institute of Technology

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Implication

Comparative analysis evaluates time-of-arrival ranging accuracy in multipath channels, highlighting performance bounds for high-precision indoor localization networks.

Key Points

To evaluate theoretical performance limits and practical time-of-arrival (TOA) estimation techniques for ultrawide bandwidth ranging in harsh multipath and interference conditions.
Analyzed key error mechanisms in TOA estimation, including multipath signal propagation, clock drift, and interference.
Derived fundamental performance limits using Cramér–Rao and Ziv–Zakai bounds across ideal and multipath propagation environments.
Evaluated low-complexity TOA estimation algorithms using standardized IEEE 802.15.4a channel models and empirical measurements from indoor residential environments.
Demonstrated that non-line-of-sight propagation and severe multipath significantly degrade ranging accuracy when the direct path is weak or absent.
Established that the Ziv–Zakai bound provides a tighter, more reliable performance benchmark than the Cramér–Rao bound in severe multipath and low signal-to-noise ratio conditions.
Showed that low-complexity TOA estimation algorithms can reliably isolate the first arrival path despite dense multipath reflections and clock drift.

Cite This Study

Dardari et al. (2009) studied this question.

synapsesocial.com/papers/69daa10284371aa676a3d779 https://doi.org/10.1109/jproc.2008.2008846

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Implication

Comparative analysis evaluates time-of-arrival ranging accuracy in multipath channels, highlighting performance bounds for high-precision indoor localization networks.

Ranging With Ultrawide Bandwidth Signals in Multipath Environments

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Implication

Key Points

Cite This Study

Ranging With Ultrawide Bandwidth Signals in Multipath Environments

Discussion

Member takes

Implication

Key Points

Cite This Study

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