Open this publication in new window or tab >>Show others...
2020 (English)In: IEEE Open Journal of Signal Processing, E-ISSN 2644-1322, Vol. 1, p. 14-27Article in journal (Refereed) Published
Abstract [en]
In this paper, we analyze the two-node joint clock synchronization 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 choice leads to a sawtooth model for the captured signal, which has not been studied before from an estimation theoretic 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. More importantly, 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 using the sawtooth signal model by presenting an exhaustive simulation study on basic estimation strategies under different realistic conditions. With our contributions in this paper, we enable further research in the estimation of sawtooth signal models and pave the path towards their industrial use for clock synchronization and ranging.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2020
Keywords
Clock synchronization, ranging, identifiability, sawtooth model, sensor networks, round-trip time (RTT)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-310097 (URN)10.1109/OJSP.2020.2978762 (DOI)000722891600003 ()2-s2.0-85094059815 (Scopus ID)
Note
Not duplicate with DiVA 1540492, 1343762.
QC 20220319
2022-03-192022-03-192024-01-08Bibliographically approved