An analysis of TOA-based location for IS-95 mobiles

Author

Messier, G.G. ; Nielsen, J.S.

Author_Institution

Nortel Networks, Calgary, Alta., Canada

Volume

2

fYear

1999

fDate

1999

Firstpage

1067

Abstract

This paper uses field measurements to characterize the performance of a time-of-arrival (TOA) based CDMA mobile location system. The measurements are used to determine the ranging error experienced by a TOA detector due to the multipath radio channel. The performance of a simple threshold detector and an enhanced least-squares detector is investigated. The relationship between ranging error and position error is illustrated using a dilution of precision calculation. Ranging error is also combined with the probability of false threshold detection to determine the signal to noise ratio required at the correlator output

Keywords

cellular radio; code division multiple access; least squares approximations; measurement errors; multipath channels; parameter estimation; signal detection; CDMA mobile location system; IS-95 mobile radio; TOA detector; TOA estimation; TOA-based location; dilution of precision calculation; false threshold detection probability; field measurements; least-squares detector; multipath radio channel; position error; ranging error; signal to noise ratio; threshold detector; time-of-arrival; Base stations; Correlators; Detectors; Equations; FCC; Global Positioning System; Land mobile radio cellular systems; Multiaccess communication; Signal to noise ratio; Telephony;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th

Conference_Location

Amsterdam

ISSN

1090-3038

Print_ISBN

0-7803-5435-4

Type

conf

DOI

10.1109/VETECF.1999.798599

Filename

798599