A TDOA location scheme in OFDM based WMANs

Author

Ni, Hao ; Ren, Guangliang ; Chang, Yilin

Author_Institution

State key Lab. of ISN, Xidian Univ., Xidian

Volume

54

Issue

3

fYear

2008

fDate

8/1/2008 12:00:00 AM

Firstpage

1017

Lastpage

1021

Abstract

A time difference of arrival (TDOA) location scheme for the orthogonal frequency division multiplexing (OFDM) based wireless metropolitan area networks (WMANs) is presented. A novel TDOA estimation algorithm for OFDM signals is proposed and adopted in this scheme. The algorithm enhances the location performance by utilizing the information in the time and frequency domains obtained from the received location OFDM signals. The simulations are implemented with an 802.16e configuration considering an outdoor wireless scenario. The simulation results show that the scheme can meet the E911 requirements in even complex multipath channel conditions, and outperform the location schemes with traditional correlation detection TDOA estimations.

Keywords

OFDM modulation; metropolitan area networks; multipath channels; packet radio networks; time-of-arrival estimation; wireless channels; IEEE 802.16e configuration; OFDM signals; TDOA estimation algorithm; WMAN; correlation detection; multipath channel conditions; orthogonal frequency division multiplexing; outdoor wireless scenario; time difference-of-arrival location scheme; wireless MAN; wireless metropolitan area networks; Costs; Frequency domain analysis; Global Positioning System; Laboratories; Metropolitan area networks; Multiaccess communication; OFDM; Signal resolution; Time difference of arrival; Wireless LAN; Orthogonal frequency division multiplexing (OFDM), location based services (LBS), Wireless Metropolitan Area Networks (WMANs), TDOA estimation;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2008.4637581

Filename

4637581