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A Novel Channel Estimation Method Using Pilot Channels for Frequency-Interleaved MC-CDMA Systems  

Cho Young-bo (연세대학교 전기전자공학과 정보통신연구실)
Lee Jae-Gu (연세대학교 전기전자공학과 정보통신연구실)
Oh seong-Mok (연세대학교 전기전자공학과 정보통신연구실)
Kang Chang-eon (연세대학교 전기전자공학과 정보통신연구실)
Hong Dae-sik (연세대학교 전기전자공학과 정보통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.12C, 2005 , pp. 1186-1192 More about this Journal
Abstract
In this paper, we propose a novel channel estimation method based on pilot channel in a frequency interleaved multicarrier code division multiple access (MC-CDMA). Using the chip interleaving (CI) technique in the frequency domain make it possible to achieve higher frequency diversity gain than the system with conventional symbol interleaving. However, in CI-MC-CDMA systems, a pilot channel-based channel estimation (PCCE) cannot be applied because the orthogonality between pilot symbols and the data symbol is not maintained. The proposed method alters the system structure in order to maintain orthogonality between data and pilot channels over two consecutive subcarriers. Therefore, it can obtain accurate channel state information (CSI) in CI-MC-CDMA.
Keywords
Channel Estimation; MC-CDMA; Chip Interleaving; Pilot Channel;
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