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Title: TOWARDS A FAST AND HARDWARE EFFICIENT SUB-MM PRECISION RANGING SYSTEM
Authors: Ayhan, Tuba
Redant, Tom
Verhelst, Marian
Dehaene, Wim
Issue Date: Oct-2012
Series Title: IEEE Workshop on Signal Processing Systems (SiPS), 2012 pages:203-208
Conference: IEEE Workshop on Signal Processing Systems (SiPS), 2012 date:17-19 October 2012
Abstract: A sub-mm ranging system, which estimates the time of flight
of a RF signal between two nodes using Time of Arrival (ToA)
estimation, is possible according to maximum likelihood estimator simulations and theoretical bounds on ToA estimation. In this paper we propose a frequency domain based ToA estimator for an indoor ranging system which is broken into 3 computational steps towards an efficiently implementable estimator. Performance of this hardware efficient estimator is comparable with the maximum likelihood estimator’s and it is computationally efficient. Complexity of the computational steps can be traded off against each other. Moreover, the implementation-aware estimator provides high flexibility on choosing between transmitted signal energy, computational cost and precision of the ranging algorithm. In this work, a simulation precision better than 1 mm is obtained for SNRs below 0 dB, by transmitting an OFDM (Orthogonal Frequency Division Multiplexing) like signal whose duration is 9 μs, with a 6 GHz bandwidth on a 60 GHz carrier.
ISBN: 978-0-7695-4856-2
ISSN: 2162-3562
Publication status: published
KU Leuven publication type: IC
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors

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