대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2001년도 제14회 신호처리 합동 학술대회 논문집
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- Pages.579-582
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- 2001
파일럿 채널 DS-CDMA 시스템에서의 적응 채널 추정 기법
Adaptive Channel Estimation in Pilot Channel based DS-CDMA Systems
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Park, Ji-Woong
(School of Electrical Engineering and INMC, Seoul National University) ;
- Lee, Yong-Hwan (School of Electrical Engineering and INMC, Seoul National University)
- 발행 : 2001.09.01
초록
The performance of a coherent rake receiver of DS-CDMA systems is significantly affected by the accuracy of channel estimation. The performance of the channel estimator can be improved by employing a channel estimation filter (CEF) whose impulse response is adjusted according to the channel condition. In this paper, we consider the design of an adaptive channel estimator for DS-CDMA systems with a pilot channel. The proposed channel estimator estimates the channel condition, which can be performed without haying exact a priori information on the operating condition. The estimated channel condition adjusts the impulse response of the CEF. Numerical results show that the use of the proposed channel estimator can provide BER performance quite robust to a wide range of channel condition.
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