A new low complexity NLOS identification approach based on UWB energy detection
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
TOA estimation with the IEEE 802.15.4a standard
IEEE Transactions on Wireless Communications
Joint TOA and DOA estimation compliant with IEEE 802.15.4a standard
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
TOA estimator for UWB backscattering RFID system with clutter suppression capability
EURASIP Journal on Wireless Communications and Networking
TOA estimation of UWB backscattering RFID tag with dual pulse modulation for clutter suppression
Wireless Communications & Mobile Computing
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This paper investigates time of arrival estimation via impulse radio ultra-wideband technology. A dense multipath channel is assumed and frequency-selective propagation effects are taken into account that make the individual received pulses different in shape from the transmitted monocycles. In these conditions a conventional correlation-based estimator cannot be used and other schemes must be resorted to. Assuming only an approximate knowledge of the received pulses' duration, a TOA estimator is derived making use of least mean square techniques. The algorithm operates on energy measurements made on a folded version of the received signal. Its performance is investigated by simulation under implementation conditions of different complexity. In particular, sub-Nyquist sampling rates are considered and analog-to-digital conversion with limited resolution is explored. Comparisons are made with other available schemes.