Accurate narrowband LPWA ranging: Principles, performance in AWGN and multipath channels
- Resource Type
- Authors
- Francois Dehmas; Vincent Berg; Florian Wolf; Valerian Mannoni; Jean-Pierre Cances; Sebastien de Rivaz
- Source
- EuCNC 2020-29th European Conference on Networks and Communications
EuCNC 2020-29th European Conference on Networks and Communications, Jun 2020, Durbovnick, Croatia. pp.148-153, ⟨10.1109/EuCNC48522.2020.9200944⟩
2020 European Conference on Networks and Communications (EuCNC)
EuCNC
- Subject
- LPWA
multipath classification/mitigation
Computer science
Estimator
[MATH.MATH-IT]Mathematics [math]/Information Theory [math.IT]
020206 networking & telecommunications
Ranging
02 engineering and technology
range estimation
[SPI.TRON]Engineering Sciences [physics]/Electronics
symbols.namesake
Narrowband
Additive white Gaussian noise
frequency hopping
Temporal resolution
0202 electrical engineering, electronic engineering, information engineering
symbols
Electronic engineering
Frequency-hopping spread spectrum
020201 artificial intelligence & image processing
Transceiver
[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Multipath propagation
Narrowband localization
- Language
- English
On-line conference; International audience; Today approaches of radio localization for Low Power Wide Area networks do not provide sufficiently accurate ranging required by applications such as wearable health monitoring. Coherent multi-channel ranging or Phase-of-Flight (PoF) ranging provides significantly improved temporal resolution through the aggregation of sequentially transmitted narrowband signals for the same level coverage performance as legacy Time-of-Flight (ToF) ranging. This paper compares the performance of PoF and ToF under additive white Gaussian channels with both simulations and laboratory measurements. Field trials have been performed in a multipath outdoor environment and strong ranging biases are observed. Ranging bias estimators are introduced and evaluated to mitigate these damaging effects: thanks to the new approach, accuracy of 30 m in 90% of the cases may be obtained. This compares to 250 m when legacy ToF is considered.