Title :
Mobile based pilot long integration for position location
Author :
Wang, Yiping ; Strawczynski, Leo ; Nielsen, John
Author_Institution :
Wireless Solution Nortel Network, Richardson, TX, USA
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;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797833
