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An Intelligent 1-Dimensional Channel Estimation Method and Its Application to a DVB-T System  

Cho, Chang-Yeon (건국대학교 전자공학과 통신시스템설계 연구실)
Kim, Joon-Tae (건국대학교 전자공학과 통신시스템설계 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.2A, 2008 , pp. 91-97 More about this Journal
Abstract
In this paper, we propose a channel estimation method associated with the interpolation order for OFDM systems. We first analyze the time varying channel and frequency selective channels, and then derive the channel index which indicates the ratio of the time axis variation and the frequency axis variation. This index is used for determining the order of interpolation such as time axis followed by frequency axis interpolation or vice versa. The computer simulation over a DVB-T system shows that the proposed method can provide more accurate channel information, thereby improving the overall performance.
Keywords
OFDM; Channel estimation; Pilot; DVB-T;
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