• Title/Summary/Keyword: Minimu Output Energy

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Blind MOE-PIC Multiuser Detector for Multicarrier DS-CDMA Systems (다중 반송파 DS-CDMA 시스템을 위한 블라인드 MOE-PIC 다중사용자 검출기)

  • Woo Dae ho;Lee Seung yong;Byun Youn shik
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.3C
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    • pp.153-157
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    • 2005
  • Frequency selective fading occurs due to the Doppler Effect in mobile communication systems. The performances of the systems are rapidly reduced due to effect of multiuser interference under frequency selective channels at DS-CDMA systems. To overcome these problems, we adopted the multi-carrier modulation techniques, and it is able to solve the frequency selective channel effects by means of these modulation techniques, and interference problems due to multiuser access are solved by means of multiuser detection techniques. In this paper, we proposed the blind MOE/PIC multiuser detection method which is composed of both the blind multiuser detection technique and parallel interference canceller. Thus, simulation results show that the proposed method performs better than conventional methods.