Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
D. Neunteufel, S. Grebien, S. Hechenberger, K. Witrisal, H. Arthaber:
"Coherent Chirp Generation by Narrowband Transceiver Chips for ToF Indoor Localization";
Vortrag: IEEE Global Telecommunications Conference (GLOBECOM),
Taipei, Taiwan;
07.12.2020
- 11.12.2020; in: "Communications for Human and Machine Intelligence",
(2020),
6 S.
Kurzfassung englisch:
We present an approach for indoor localization ofradio nodes using commercial off-the-shelf (COTS), low-cost,low-power, transceiver chips, found in many internet of things(IoT) applications. As such chips are typically narrowband bydesign, suitable localization schemes are narrowband as well,e.g., based on received signal strength indication (RSSI) or angleof arrival (AoA) measurements. Naturally, these techniques areprone to multipath fading in indoor scenarios. To circumventthis, we show that for a typical transceiver chip it is possibleto generate reproducible frequency-chirped wideband signalswith deterministic behavior, suitable for time of fligh (ToF)localization. Despite the simplicity of the deployed radio, it ispossible to predict the phase of this waveform in order to use a signal model for filterin at the receiver side.
In an exemplary implementation based on a Texas InstrumentsCC2510 chip, we achieve an overall signal bandwidth of up to80 MHz, centered at 2:44 GHz. With a synchronized receiverinfrastructure in a simple scenario, an absolute localization errorbelow 1 m in 90 % of the cases can be reached even with a fast,sub-optimal time difference of arrival (TDoA) multilateration algorithm.
Schlagworte:
indoor localization, radio frequency, time of flight, low-power hardware, internet of things
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.