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Application of fuzzy logic for adaptive interference canceller in CDMA systems

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

In this paper, the performance of the proposed fuzzy logic parallel interference cancellation (FLPIC) multiuser detector is evaluated for frequency-selective fading channels in wireless CDMA communication systems. A modified fuzzy logic system (FLS) with an adequate scaling factor (SF) is proposed to infer adequate partial factors (PFs) for the PIC scheme. Simulation results show that the proposed FLS can adapt to the large variations of users' fading effects. Therefore, the FLPIC outperforms the conventional PIC (CPIC) and constant weight PIC (CW-PIC) over two-path and three-path time-varying frequency-selective fading channels especially at heavy system load in DS-CDMA systems.

Original languageEnglish
Title of host publicationNew Trends in Applied Artificial Intelligence - 20th International Conference on Industrial, Engineering, and Other Applications of Applied Intelligent Systems, lEA/AlE 2007, Proceedings
PublisherSpringer Verlag
Pages166-175
Number of pages10
ISBN (Print)9783540733225
DOIs
StatePublished - 2007
Event20th International Conference on Industrial, Engineering, and Other Applications of Applied Intelligent Systems, lEA/AlE-2007 - Kyoto, Japan
Duration: 26 Jun 200729 Jun 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4570 LNAI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference20th International Conference on Industrial, Engineering, and Other Applications of Applied Intelligent Systems, lEA/AlE-2007
Country/TerritoryJapan
CityKyoto
Period26/06/0729/06/07

Keywords

  • DS-CDMA
  • Fuzzy logic system (FLS)
  • Multiuser detection
  • Parallel interference cancellation (PIC)

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