The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Channel Estimation Schemes of W-CDMA TDD Mode Employing Multi-User Detector

다중사용자 수신기법을 적용한 W-CDMA TDD 모드의 채널 추정 기법

  • 고균병 (연세대학교 전기전자공학과 정보통신연구실) ;
  • 조영보 (연세대학교 전기전자공학과 정보통신연구실) ;
  • 권동승 (한국전자통신연구원 TDD 전송기술연구팀) ;
  • 정인철 (한국전자통신연구원 TDD 전송기술연구팀) ;
  • 강창언 (연세대학교 전기전자공학과 정보통신연구실) ;
  • 홍대식 (연세대학교 전기전자공학과 정보통신연구실)
  • Published : 2002.03.01
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Abstract

This paper studies the channel estimation schemes of Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system with a parallel interference canceller (PIC) in multi-path fading channels. furthermore, the effective interpolation method which maintains the flexibility of UTRA TDD mode is proposed. By Monte Carlo simulations, it is verified that the proposed interpolation method can be used in order to obtain the proper performance of a multi-stage PIC and in order to reduce the required Eb/No for a given bit error rate (BER).

본 논문에서는 다단계 간섭제거 기법을 적용한 UTRA TDD 모드에서의 채널 추정 기법들의 성능을 다중경로 페이딩 채널 환경에서의 모의 실험을 통해 확인하였다. 또한, UTRA TDD 모드의 장점을 유지할 수 있는 효율적인 Interpolation 기법을 제안하였다. 모의 실험을 수행하여 제안된 기법을 통해 완벽한 채널 추정 조건에서의 다단계 간섭제거 기법의 성능을 얻을 수 있음을 검증하였고. 주어진 BER에서 요구되는 Eb/No를 줄일 수 있음을 확인하였다.

Keywords

References

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