Analysis of IPDL patterns for increased signal detection probability in UMTS

Author

Thomas, N.J. ; Cruickshank, D. G M ; Laurenson, D.I.

Author_Institution

Dept. of Electron. & Electr. Eng., Edinburgh Univ., UK

Volume

4

fYear

2001

fDate

2001

Firstpage

2705

Abstract

To support mobile location services in UMTS systems, idle period downlink (IPDL) techniques have been proposed to avoid the near-far effect in CDMA systems and thus to facilitate the measurement of time difference of arrivals. In this paper the effects of the idle period pattern and variable coherent and non-coherent integration lengths on the detection of signals from distant base stations are evaluated theoretically under some simplifying assumptions and by simulation. The proposed clustered idle period patterns are assessed and shown to outperform regular patterns in certain conditions

Keywords

Rayleigh channels; Rician channels; cellular radio; code division multiple access; mobile radio; probability; signal detection; 3G mobile communication; CDMA; IPDL patterns; Rayleigh fading; Rician fading; UMTS; clustered idle period patterns; coherent integration lengths; distant base stations; idle period downlink techniques; mobile location services; near-far effect; noncoherent integration lengths; signal detection probability; simulation; 3G mobile communication; Downlink; Interference; Multiaccess communication; Pattern analysis; Signal analysis; Signal detection; Time difference of arrival; Time measurement; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944092

Filename

944092