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학술지 Performance of Channel Estimation Methods for OFDM Systems in a Multipath Fading Channels
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저자
문재경, 최송인
발행일
200002
출처
IEEE Transactions on Consumer Electronics, v.46 no.1, pp.161-170
ISSN
0098-3063
출판사
IEEE
DOI
https://dx.doi.org/10.1109/30.826394
협약과제
00JR2100, IMT-2000 비동기 방식 시스템엔지니어링 기술 공동연구개발, 채종석
초록
In this paper, a Gaussian interpolation filter and cubic interpolation filter are presented as more accurate interpolation filters compared to the conventional linear interpolation filter. In addition to an interpolation filter, a low pass filter using FFT and IFFT is also presented to reduce the noisy components of a channel estimate obtained by an interpolation filter. Channel estimates after low-pass filtering combined with interpolation filters can lower the error floor compared to the use of only interpolation filters. Computer simulation demonstrates that the presented channel estimation methods exhibit an improved performance compared to the conventional linear interpolation filter.
KSP 제안 키워드
Channel estimation(CE), Computer simulation(MC and MD), Cubic interpolation, Error floor, Multipath fading channel, OFDM systems, channel estimation methods, improved performance, linear interpolation filter, low-pass filtering