Robust wireless location over fading channels

Author

Yousef, Nabil R. ; Sayed, Ali H. ; Jalloul, Louay M A

Author_Institution

Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA

Volume

52

Issue

1

fYear

2003

fDate

1/1/2003 12:00:00 AM

Firstpage

117

Lastpage

126

Abstract

This paper develops an estimation algorithm for the time and amplitude of arrival of a known transmitted sequence over a single-path fading channel. The algorithm is optimized to enhance robustness to fast channel fading and low signal-to-noise ratio (SNR) conditions, which are common in wireless location applications. The paper also presents a noise and fading bias correction technique for amplitude of arrival estimation that improves the estimation accuracy significantly. The proposed algorithm is then applied to the case of code-division multiple-access (CDMA) wireless location finding for which the paper gives simulation results that demonstrate significant estimation accuracy improvement over known algorithms.

Keywords

AWGN; amplitude estimation; cellular radio; code division multiple access; fading channels; multiuser channels; noise; radio direction-finding; AWGN; CDMA; SNR; additive white Gaussian noise; amplitude of arrival estimation; cellular radio; code-division multiple-access; estimation accuracy; estimation algorithm; fading bias correction; fading channels; fast channel fading; low signal-to-noise ratio; robust wireless location; simulation results; single-path fading channel; time of arrival estimation; transmitted sequence; Amplitude estimation; FCC; Fading; Multiaccess communication; Noise level; Parameter estimation; Robustness; Safety; Signal to noise ratio; Wireless sensor networks;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2002.807153

Filename

1193097