Pilot power minimization with coverage and locatability constraints in CDMA systems

Author

Zhang, Hao ; Nagesh, Harsha ; Jiang, Zhong-Ping

Author_Institution

Dept. of ECE, Polytech. Univ. Brooklyn, NY, USA

Volume

10

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

174

Lastpage

176

Abstract

Position location (PL) of a UE requesting E-911 services should be provided by wireless communication service providers, according to the Federal Communications Commission (FCC) regulations. Raising pilot power fraction can improve the system locatability, while it may also cause pilot pollution and increase interference to UEs in neighboring cells. In this letter we find the optimal pilot power allocation subject to coverage and locatability constraints. The results have shown that with new localization techniques such as idle period downlink (IPDL) and cumulative virtual blanking (CVB), the coverage and locatability constraints can be satisfied without requiring long integration time and large pilot power fraction.

Keywords

code division multiple access; minimisation; radiocommunication; radiofrequency interference; telecommunication services; CDMA system; E-911 service; FCC; Federal Communications Commission; UE interference; code division mulitple access; pilot power minimization; position location; system locatability; wireless communication service provider; Accidents; Blanking; Costs; Downlink; FCC; Interference constraints; Multiaccess communication; Navigation; Pollution measurement; Wireless communication;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2006.1603375

Filename

1603375