대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2007년도 하계종합학술대회 논문집
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- Pages.125-126
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- 2007
OFDM 시스템에서 보간 순서에 따르는 채널 추정기의 성능 비교
Analysis of channel estimation performance associated with the interpolation order in OFDM System
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Cho, Chang-Yeon
(School of Electronic Engineering Konkuk University) ;
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Kim, Joon-Tae
(School of Electronic Engineering Konkuk University)
- 발행 : 2007.07.11
초록
In this paper, we analyze the channel estimation performances associated with the interpolation order for OFDM systems. We first analyze the time varying channel and frequency selective channel, and then we derive the channel Index which indicates the ratio of time axis variation and frequency axis variation. The analyzed results show that time interpolation followed by a frequency interpolation is adequate for the channel with a channel index larger than a certain threshold value and vice versa. Computer simulation explains that the method which decides Interpolation order outperforms fixed order estimation.
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