Multi-tap Equalization algorithm for the OFDM System Based on the Fractional Fourier Transform

Enqing Chen; Pengge Ma; Lin qi; Ran Tao

ChinaCom2009-Signal Processing for Communications Symposium

Research Article

Multi-tap Equalization algorithm for the OFDM System Based on the Fractional Fourier Transform

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/CHINACOM.2009.5339806,
    author={Enqing Chen and Pengge Ma and Lin qi and Ran Tao},
    title={Multi-tap Equalization algorithm for the OFDM System Based on the Fractional Fourier Transform},
    proceedings={ChinaCom2009-Signal Processing for Communications Symposium},
    publisher={IEEE},
    proceedings_a={CHINACOM2009-SPC},
    year={2009},
    month={11},
    keywords={FrFT-OFDM ICI time-varing channel OFDM},
    doi={10.1109/CHINACOM.2009.5339806}
}

Enqing Chen
Pengge Ma
Lin qi
Ran Tao
Year: 2009
Multi-tap Equalization algorithm for the OFDM System Based on the Fractional Fourier Transform
CHINACOM2009-SPC
IEEE
DOI: 10.1109/CHINACOM.2009.5339806

Enqing Chen¹^,*, Pengge Ma², Lin qi³, Ran Tao⁴

1: Department of Information Engineering, Zhengzhou University, Zhengzhou Henan 450001, China, Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China
2: Department of Information Engineering, Zhengzhou University, Zhengzhou Henan 450001, China ,ZhenZhou Institute of Aeronautical Industry Management, Zhenzhou Henan 450015, China
3: Department of Information Engineering, Zhengzhou University, Zhengzhou Henan 450001, China
4: Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China

*Contact email: enqingchen@gmail.com

Abstract

Transmission over wireless channels will introduce intersymbol interference (ISI) as well as interchannel (or intercarrier) interference (ICI). To decrease the effects of ICI, this paper proposes a multi-tap equalizer for the OFDM system based on the fractional Fourier transform (FrFT). In this FrFT-OFDM system, traditional Fourier transform is replaced by fractional Fourier transform to modulate and demodulate the data symbols. And the multi-tap equalizer in the fractional Fourier domain has been designed to equalize the received signal and reduce the ICI. Theoretical analysis and numerical simulation results show that the proposed equalizer in optimal fractional Fourier domain can significantly improve the performance of the system as compared to the Fourier domain equalizer.

Keywords: FrFT-OFDM ICI time-varing channel OFDM

Published: 2009-11-20
Publisher: IEEE
Modified: 2010-05-16

: http://dx.doi.org/10.1109/CHINACOM.2009.5339806

Multi-tap Equalization algorithm for the OFDM System Based on the Fractional Fourier Transform

Abstract

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