Spreading Sequence Assignment in WCDMA for Distributed Antenna Arrays Based on Interference Model

Author

Botella, C. ; Pinero, G. ; Gonzalez, A. ; de Diego, M.

Author_Institution

Inst. of Telecommun. & Multimedia Applications, Univ. Politecnica de Valencia

fYear

2006

fDate

2-5 July 2006

Firstpage

1

Lastpage

5

Abstract

A new spreading sequence assignment scheme for WCDMA is proposed in this paper. It is based on a simple but exhaustive model of the interferences involved: multiple access (MAI) and inter-finger interferences (IFI) at a mobile RAKE receiver output. These interferences are mainly determined in this work by the correlation properties of the spreading sequences. The new approach assigns spreading sequences in a way that minimum interference power between active users can be achieved. Simulation results show that the new scheme outperforms natural (consecutive ordering) scheme for the typical central situation of antenna arrays in a cell, but these benefits are even higher for a configuration of distributed antenna arrays around the cell

Keywords

antenna arrays; code division multiple access; interference (signal); mobile radio; radio receivers; WCDMA; consecutive ordering scheme; correlation properties; distributed antenna arrays; inter-finger interferences; interference model; mobile RAKE receiver output; multiple access interferences; spreading sequence assignment scheme; Analytical models; Antenna arrays; Diversity reception; Downlink; Fading; Multiaccess communication; Multipath channels; Multiple access interference; Power control; Power system modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Conference_Location

Cannes

Print_ISBN

0-7803-9710-X

Electronic_ISBN

0-7803-9711-8

Type

conf

DOI

10.1109/SPAWC.2006.346438

Filename

4153978