지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.12
- 수록면
- 1,208 - 1,215 (8page)
이용수
초록· 키워드
오류제보하기
In OFDM systems, mobile channel degrades the system performance seriously. Therefore, channel estimation technique is required to compensate for the degradation from the channel effects. However, conventional channel estimations in frequency domain induce ICI which is induced from Doppler frequency. In addition, a linear interpolation method causes inaccurate channel estimation. In order to minimize the effect of the interference and interpolation error, the proposed method combines LS method and Kalman filtering algorithm. Channel impulse response is adaptively tracked by Kalman filtering based on the information from LS estimator. Simulation results are presented to verify the performance of the proposed channel estimation over mobile channel environment. Simulation results show that the proposed method can effectively compensate for channel degradation.
목차
ABSTRACT
Ⅰ. Introduction
Ⅱ. System Model
Ⅲ. Proposed Channel Estimation
Ⅳ. Simulation Results
Ⅴ. Conclusion
References
참고문헌 (22)
참고문헌 신청
1. [학술지(정기간행물)] - Al-Naffouri / 2007 / An em-based forward-backward Kalman filter for the estimation of time-variant channels in OFDM / IEEE Trans on Sig. 55 (7) : 3924 ~ 3930
2. [학술지(정기간행물)] - Y. S. Choi / 2001 / On channel estimation and detection for multicarrier signals in fast and selective Rayleigh fading channel / IEEE trans.comm. 49 (10) : 1375 ~ 1387
3. [학술지(정기간행물)] - MORELLI Michele / 2001 / A comparison of pilot-aided channel estimation methods for OFDM systems / IEEE transactions on sig. 49 (12) : 3065 ~ 3073
4. [학술대회논문] - B.W. Seo / 2007 / Improved precoding-assisted blind channel estimation scheme for OFDM systems / Proc. IEEE 66th VTC’07 : 1260 ~ 1264
5. [학술지(정기간행물)] - Lin, R. / 2005 / Linear precoding assisted blind channel estimation for OFDM systems / IEEE Trans. Vehicular Technology 54 (3) : 983 ~ 995
2. [학술지(정기간행물)] - Y. S. Choi / 2001 / On channel estimation and detection for multicarrier signals in fast and selective Rayleigh fading channel / IEEE trans.comm. 49 (10) : 1375 ~ 1387
3. [학술지(정기간행물)] - MORELLI Michele / 2001 / A comparison of pilot-aided channel estimation methods for OFDM systems / IEEE transactions on sig. 49 (12) : 3065 ~ 3073
4. [학술대회논문] - B.W. Seo / 2007 / Improved precoding-assisted blind channel estimation scheme for OFDM systems / Proc. IEEE 66th VTC’07 : 1260 ~ 1264
5. [학술지(정기간행물)] - Lin, R. / 2005 / Linear precoding assisted blind channel estimation for OFDM systems / IEEE Trans. Vehicular Technology 54 (3) : 983 ~ 995
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