Mobile based pilot long integration for position location

Author

Wang, Yiping ; Strawczynski, Leo ; Nielsen, John

Author_Institution

Wireless Solution Nortel Network, Richardson, TX, USA

fYear

1999

fDate

1999

Firstpage

291

Abstract

Reverse link power control in CDMA systems such as TIA/EIA/IS-95 systems poses a significant difficulty to network based position location. An alternative is to use CDMA pilot signals on the forward link to obtain the mobile location. We propose a mobile based long integration method for the pilot signals to increase the pilot visibility to the mobile such that adequate pseudorange estimates can be made. Simulation has demonstrated that a received pilot power of Ec/Io⩾-30 dB leads to a TOA estimate of sufficient accuracy to meet FCC requirements. With a -30 dB Ec/Io threshold, the mobile can generally detect three or more base station pilots in rural, suburban, urban and dense urban environments

Keywords

cellular radio; code division multiple access; CDMA pilot signals; CDMA systems; TIA/EIA/IS-95 systems; TOA estimate; base station pilot; forward link; mobile based pilot long integration; pilot signals; position location; pseudorange estimates; received pilot power; reverse link power control; Base stations; FCC; Global Positioning System; Interference; Multiaccess communication; Power control; Power system management; Propagation losses; Satellites; Telephone sets;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE

Conference_Location

New Orleans, LA

ISSN

1525-3511

Print_ISBN

0-7803-5668-3

Type

conf

DOI

10.1109/WCNC.1999.797833

Filename

797833