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Channel Estimation Schemes of W-CDMA TDD Mode Employing Multi-User Detector  

고균병 (연세대학교 전기전자공학과 정보통신연구실)
조영보 (연세대학교 전기전자공학과 정보통신연구실)
권동승 (한국전자통신연구원 TDD 전송기술연구팀)
정인철 (한국전자통신연구원 TDD 전송기술연구팀)
강창언 (연세대학교 전기전자공학과 정보통신연구실)
홍대식 (연세대학교 전기전자공학과 정보통신연구실)
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).
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