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2017•DEStech Transactions on Computer Science and EngineeringRequires access

CRLB of TOA/AOA Based Localization Method in Cost259 Channel

Junhui Zhang, Zheng Liu, Jiyan Huang

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Abstract

The determination of Cramer-Rao lower bound (CRLB) as an optimality criterion for the problem of mobile location is a very important issue. Although many CRLBs for TOA, TDOA, SS, and TOA/SS in NLOS environments have been addressed in the literature, those researches are based on mathematical models rather than measurement data obtained from field test. Cost259 channel model is developed based on measurements and has a wide application in mobile location. Based on Cost259 channel model, the authors in [1] analyzed the performance of TOA/AOA localization technique in a NLOS environments. Unfortunately, there are some mistakes in the CRLB derived in [1]. In this paper, the correct version of the CRLB is provided, and the corresponding simulation results are given.

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What this paper is about

The determination of Cramer-Rao lower bound (CRLB) as an optimality criterion for the problem of mobile location is a very important issue. Although many CRLBs for TOA, TDOA, SS, and TOA/SS in NLOS environments have been addressed in the literature, those researches are based on mathematical models rather than measurement data obtained from field test. Cost259 channel model is developed based on measurements and has a wide application in mobile location. Based on Cost259 channel model, the authors in [1] analyzed the performance of TOA/AOA localization technique in a NLOS environments. Unfortunately, there are some mistakes in the CRLB derived in [1]. In this paper, the correct version of the CRLB is provided, and the corresponding simulation results are given.

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Available abstract

The determination of Cramer-Rao lower bound (CRLB) as an optimality criterion for the problem of mobile location is a very important issue. Although many CRLBs for TOA, TDOA, SS, and TOA/SS in NLOS environments have been addressed in the literature, those researches are based on mathematical models rather than measurement data obtained from field test. Cost259 channel model is developed based on measurements and has a wide application in mobile location. Based on Cost259 channel model, the authors in [1] analyzed the performance of TOA/AOA localization technique in a NLOS environments. Unfortunately, there are some mistakes in the CRLB derived in [1]. In this paper, the correct version of the CRLB is provided, and the corresponding simulation results are given.

Key concepts: Cramér–Rao bound, Non-line-of-sight propagation, Multilateration, Computer science, Time of arrival, Upper and lower bounds, Channel (broadcasting), Algorithm

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