Grouped RAKE finger management principle for wideband CDMA

Author

Vejlgaard, Benny N. ; Mogensen, Preben ; Knudsen, Jasper Bailum

Author_Institution

Bosch Telecom Danmark, Pandrup, Denmark

Volume

1

fYear

2000

fDate

2000

Firstpage

87

Abstract

A RAKE finger allocation algorithm for direct-sequence spread-spectrum systems is presented and analyzed. The RAKE finger allocation method is based on grouped RAKE finger assignment. The detected code phases with greatest power are assigned a group of RAKE fingers with equal spacing around the detected code phase. Allocating the RAKE fingers with spacing less than one chip period can reduce overhead for delay tracking. The grouped RAKE finger allocation principle is compared to single RAKE finger allocation. Allocating three RAKE fingers with T_c/2 spacing gives a 0.2-0.4 dB gain compared to single RAKE finger assignment with the same number of RAKE and tracking fingers

Keywords

broadband networks; code division multiple access; delays; land mobile radio; multipath channels; multiuser channels; radio networks; radio receivers; spread spectrum communication; synchronisation; telecommunication network management; DS-SS systems; RAKE finger allocation algorithm; delay tracking; detected code phases; direct-sequence spread-spectrum systems; gain; grouped RAKE finger management; mobile station; multipath delay; overhead reduction; single RAKE finger allocation; wideband CDMA; Delay; Fading; Fingers; Multiaccess communication; Multipath channels; Performance analysis; Phase detection; RAKE receivers; Testing; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851423

Filename

851423