NDLI: Analysis of downlink location methods for WCDMA and cdma2000

Content Provider	IEEE Xplore Digital Library
Author	Wang, S.S. Green, M. Malkawi, M.
Copyright Year	2001
Description	Author affiliation: Nokia Res. Center, Irving, TX, USA (Wang, S.S.)
Abstract	A simulation tool for studying the downlink trilateration method of a MS (mobile station) location in CDMA and TDMA systems has been developed. The primary function of this simulator is to determine the location accuracy in various situations (such as in urban, suburban and rural propagation environments) and to investigate various means of reducing the positioning errors. This tool simulates the signal received by the MS from the surrounding BSs (base stations), which is processed to obtain the TOA (time of arrival) or TDOA (time delay of arrival) estimate and then transmitted to the location estimator unit. The location estimator unit computes an estimate of the MS location. The simulator allows the testing of various methods and location estimators in several typical environments. We present the location accuracy and implementation complexity for WCDMA and cdma2000 systems. The WCDMA simulator is based on ARIB and ETSI WCDMA specifications and utilizes the IP-DL (idle period-downlink) algorithm. On the other hand, cdma2000 simulator is based on the TIA AFLT (advanced forward-link trilateration) specifications.
Starting Page	2580
Ending Page	2584
File Size	405092
Page Count	5
File Format	PDF
ISBN	0780367286
ISSN	10903038
DOI	10.1109/VETECS.2001.944067
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-05-06
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Downlink Multiaccess communication Computational modeling Delay estimation Time division multiple access Signal processing Base stations Delay effects Testing Telecommunication standards
Content Type	Text
Resource Type	Article

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