Interference suppression based on code grouping and groupwise decorrelation in multirate W-CDMA downlink

H. A. Won, Junghwa Bae, Jinwoo Park

Research output: Contribution to journalArticle

Abstract

In this paper, we presented a new interference suppression method based on groupwise decorrelation for the multirate wideband-code division multiple access (W-CDMA) downlink. Code grouping in the proposed method is performed according to the correlation property between the mother code and the child code in the orthogonal variable spreading factor (OVSF) code tree. The decorrelation process based on the grouped codes, so called groupwise decorrelation, is then performed to suppress the interference induced in the downlink propagation. We demonstrate that the proposed method can enhance the performance significantly, with lower computational complexity and higher operational efficiency in which any information about interference users (code, data, amplitude) is not required to know in prior at the detection stage.

Original languageEnglish
Pages (from-to)3125-3129
Number of pages5
JournalIEICE Transactions on Communications
VolumeE87-B
Issue number10
Publication statusPublished - 2004 Oct 1

Keywords

  • Code-grouping
  • Groupwise decorrelation
  • Interference suppression
  • OVSF
  • W-CDMA downlink

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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