Title :
Comments on "The Cramer-Rao Bounds of Hybrid TOA/RSS and TDOA/RSS Location Estimation Schemes"
Author :
Huang, Ji-Yan ; Wan, Qun
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
fDate :
11/1/2007 12:00:00 AM
Abstract :
It is shown that in the above letter by Catovic and Sahinoglu the Cramer-Rao Bound (CRB) for the time difference of arrival/received signal strength (TDOA/RSS) based location estimation was derived incorrectly. The correct version of the CRB for the TDOA/RSS is provided, and the corresponding simulation results are given.
Keywords :
mobile computing; time-of-arrival estimation; Cramer Rao bounds; TDOA RSS location estimation schemes; hybrid TOA RSS; received signal strength; time difference of arrival; Area measurement; Covariance matrix; Density measurement; Matrix decomposition; Probability density function; Q measurement; Time difference of arrival; Time measurement; Wide area networks;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.071264
