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Clock synchronizati...
Clock synchronization over networks - Identifiability of the sawtooth model
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- del Aguila Pla, Pol, 1990- (author)
- KTH,Teknisk informationsvetenskap
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- Pellaco, Lissy, 1992- (author)
- KTH,Teknisk informationsvetenskap
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- Dwivedi, Satyam (author)
- Ericsson Research
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- Händel, Peter (author)
- KTH,Teknisk informationsvetenskap
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- Jaldén, Joakim, 1976- (author)
- KTH,Teknisk informationsvetenskap
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(creator_code:org_t)
- English.
- Related links:
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https://arxiv.org/ab...
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https://github.com/p...
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https://kth.diva-por... (primary) (Raw object)
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Abstract
Subject headings
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- In this paper, we analyze the two-node joint clocksynchronization and ranging problem. We focus on the case of nodes that employ time-to-digital converters to determine the range between them precisely. This specific design leads to a sawtooth model for the captured signal, which has not been studied in detail before from an estimation theory standpoint. In the study of this model, we recover the basic conclusion of a well-known article by Freris, Graham, and Kumar in clock synchronization. Additionally, we discover a surprising identifiability result on the sawtooth signal model: noise improves the theoretical condition of the estimation of the phase and offset parameters. To complete our study, we provide performance references for joint clock synchronization and ranging. In particular, we present the Cramér-Rao lower bounds that correspond to a linearization of our model, as well as a simulation study on the practical performance of basic estimation strategies under realistic parameters. With these performance references, we enable further research in estimation strategies using the sawtooth model and pave the path towards industrial use.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- Clock synchronization
- ranging
- identifiability
- sawtooth model
- sensor networks
- round-trip time (RTT)
- Electrical Engineering
- Elektro- och systemteknik
Publication and Content Type
- vet (subject category)
- ovr (subject category)
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