Title :
Comments on "Improved Positioning Algorithms for Nonline-of-Sight Environments
Author :
Yang, Kai ; An, Jianping
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing, China
Abstract :
In "Improved positioning algorithms for nonline-of-sight environments" (IEEE Trans. Veh. Technol., vol. 57, no. 4, pp. 2342-2353, Jul. 2008), a CramE??r-Rao lower bound (CRLB) was derived for the performance of positioning algorithms for nonline-of-sight environments. In this correspondence, an error in the elements of the Fisher information matrix is pointed out and corrected. It is observed here that the paper in question provides an incorrect CRLB.
Keywords :
radionavigation; Cramer-Rao lower bound; Fisher information matrix; nonline-of-sight environments; positioning algorithms; Constraint optimization; Error correction; Quadratic programming; CramÉr–Rao lower bound (CRLB); Fisher information matrix; radio positioning;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2009.2027021
