TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Delay-Accuracy Trade-off in Opportunistic Time-of-Arrival Localization

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut763-767
JulkaisuIEEE Signal Processing Letters
Vuosikerta25
Numero6
Varhainen verkossa julkaisun päivämäärä14 huhtikuuta 2018
DOI - pysyväislinkit
TilaJulkaistu - kesäkuuta 2018
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

While designing a positioning network, the localization performance is traditionally the main concern. However, collection of measurements together with channel access methods require a nonzero time, causing a delay experienced by network nodes. This fact is usually neglected in positioning-related literature. In terms of the delay-accuracy trade-off, broadcast schemes have an advantage over unicast, provided nodes can be properly synchronized. In this letter, we analyze the delay-accuracy trade-off, for localization schemes in which the position estimates are obtained based on broadcasted ranging signals. We find that for dense networks, the trade-off is the same for cooperative and noncooperative networks, and cannot exceed a certain threshold value.