Title :
Radio location in urban CDMA microcells
Author :
Caffery, James J. ; Stüber, Gordon L.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A radio location method for code-division multiple-access (CDMA) microcellular networks is investigated. The method discussed focuses on the use of time difference of arrival (TDOA) estimates for deriving the position of a mobile unit in a CDMA system, where the transmitted signal is received by several base stations (BSs). The TDOA estimates are obtained by using a delay-lack loop. A similar method is used in the global position system (GPS), but its performance in an urban microcellular propagation environment has not been previously studied. Simulation results are given for different radio propagation environments
Keywords :
cellular radio; code division multiple access; delay circuits; land mobile radio; parameter estimation; radio direction-finding; road vehicles; GPS; TDOA estimates; base stations; code division multiple access; delay-lack loop; global position system; microcellular networks; mobile unit; performance; position; radio location method; radio propagation environments; simulation results; time difference of arrival estimates; transmitted signal; urban CDMA microcells; urban microcellular propagation environment; vehicle location simulation; Base stations; Cellular networks; Control systems; Delay estimation; Disaster management; Global Positioning System; Intelligent transportation systems; Intelligent vehicles; Microcell networks; Multiaccess communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-3002-1
DOI :
10.1109/PIMRC.1995.480990
