New Theoretical Limit Analysis of LoS and RSS Based Positioning Methods for Ricean Fading Channel in RF Systems
In this paper, bias and CRB analysis for both proposed line-of-sight (LoS) and conventional radio-signal-strength (RSS) based positioning methods are derived. In contrast to the conventional lognormal based analysis, the derived error models take into account the environmental multipath fading effect. The proposed LoS-based scheme improves positioning accuracy by eliminating the effect of non-range dependent portion of powers from the received signal. It suppresses non-line-of-sight (NLoS) disturbance to the positioning result through estimating the LoS component from fading signal. Hence, it is robust to environmental fading disturbance. The derived error models are validated by simulation. Both analytical model and simulation results show that the accuracy and robustness of the proposed LoS-based positioning are superior to that of the conventional RSS-based methods.
L. Wang and M. J. Zawodniok, "New Theoretical Limit Analysis of LoS and RSS Based Positioning Methods for Ricean Fading Channel in RF Systems," IEEE Transactions on Mobile Computing, vol. 18, no. 10, pp. 2401-2414, Institute of Electrical and Electronics Engineers (IEEE), Oct 2019.
The definitive version is available at https://doi.org/10.1109/TMC.2018.2872989
Electrical and Computer Engineering
Intelligent Systems Center
Keywords and Phrases
Antenna measurements; Cramer-Rao Bound (CRB); Estimation; Fading Channel; Line of Sight (LoS); Localization; Nonlinear optics; Radio frequency; Rayleigh channels; Received Signal Strength (RSS); Robustness
International Standard Serial Number (ISSN)
Article - Journal
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01 Oct 2019