Source Localization from Received Signal Strength Under Log-Normal Shadowing: Bias and Variance

Author

Chitte, Sree Divya ; Dasgupta, Soura ; Ding, Zhi

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Iowa, Iowa City, IA, USA

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

This paper considers statistical issues of source localization from received signal strength (RSS) measurements affected by log-normal shadowing with focus on bias and variance. We characterize the class of all unbiased estimates of the source position and show that their error variances grow exponentially with the noise power. Finally, we propose an estimate the bias and error variance of which are both bounded in the noise power.

Keywords

log normal distribution; signal processing; statistical analysis; RSS measurement; bias estimation; error variance; log-normal shadowing; noise power; received signal strength; source localization; source position; statistical analysis; unbiased estimate; Algorithm design and analysis; Cities and towns; Gaussian noise; Monitoring; Pervasive computing; Random variables; Sensor phenomena and characterization; Shadow mapping; Time difference of arrival; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing, 2009. CISP '09. 2nd International Congress on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4129-7

Electronic_ISBN

978-1-4244-4131-0

Type

conf

DOI

10.1109/CISP.2009.5301003

Filename

5301003