Hybrid TDOA/AOA mobile user location for wideband CDMA cellular systems
Top Cited Papers
- 7 August 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 1 (3) , 439-447
- https://doi.org/10.1109/twc.2002.800542
Abstract
This paper proposes a mobile user location scheme for wideband code-division multiple-access (CDMA) wireless communication systems. To achieve high location accuracy and low cost of the mobile receiver, the location scheme combines the time difference of arrival (TDOA) measurements from the forward link pilot signals with the angle of arrival (AOA) measurement from the reverse link pilot signal. High chip rates in wideband CDMA systems facilitate accurate TDOA measurements, and a smart antenna used at the home base station (BS) can provide accurate AOA measurement in a macrocell environment. A two-step least square location estimator is developed based on a linear form of the AOA equation in the small error region. Numerical results demonstrate that the proposed hybrid TDOA/AOA location scheme gives a much higher location accuracy than TDOA only location, when the number of base stations is small and/or when the TDOA measurements have a relatively poor accuracy.Keywords
This publication has 12 references indexed in Scilit:
- Direction-of-arrival of partial waves in wideband mobile radio channels for intelligent antenna conceptsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Vehicle location and tracking for IVHS in CDMA microcellsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Subscriber location in CDMA cellular networksIEEE Transactions on Vehicular Technology, 1998
- Line-of-sight angle of arrival estimation in the outdoor multipath environmentIEEE Transactions on Vehicular Technology, 1998
- A simple and efficient estimator for hyperbolic locationIEEE Transactions on Signal Processing, 1994
- Microwave Mobile CommunicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1994
- A divide and conquer approach to least-squares estimationIEEE Transactions on Aerospace and Electronic Systems, 1990
- Statistical Theory of Passive Location SystemsIEEE Transactions on Aerospace and Electronic Systems, 1984
- Position-Location Solutions by Taylor-Series EstimationIEEE Transactions on Aerospace and Electronic Systems, 1976
- A power-spectral theory of propagation in the mobile-radio environmentIEEE Transactions on Vehicular Technology, 1972