Low Complexity Intercarrier Interference Equalization Technique in OFDM System

Feng YANG; WenJun ZHANG; ShuRong JIAO; Xiaoyun HOU

doi:10.1093/ietcom/e89-b.7.2043

Low Complexity Intercarrier Interference Equalization Technique in OFDM System

Feng YANG, WenJun ZHANG, ShuRong JIAO, Xiaoyun HOU

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Intercarrier interference will cause the loss of subchannel orthogonality and increase the error floor in proportion to the Doppler frequency. In this paper, we firstly analyze the generation mechanism of intercarrier interference in OFDM. Then we propose an O(N log₂N) complexity ICI equalizer for OFDM systems in the presence of double selective fading which is mainly bases on FFT operation. Simulation result shows that with only 6 iterations LCD-FFT can achieve better performance than the LS-equalizer. After 10 iterations LCD-FFT performs almost the same as MMSE equalizer.

Publication: IEICE TRANSACTIONS on Communications Vol.E89-B No.7 pp.2043-2049

Publication Date: 2006/07/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e89-b.7.2043

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Feng YANG, WenJun ZHANG, ShuRong JIAO, Xiaoyun HOU, "Low Complexity Intercarrier Interference Equalization Technique in OFDM System" in IEICE TRANSACTIONS on Communications, vol. E89-B, no. 7, pp. 2043-2049, July 2006, doi: 10.1093/ietcom/e89-b.7.2043.
Abstract: Intercarrier interference will cause the loss of subchannel orthogonality and increase the error floor in proportion to the Doppler frequency. In this paper, we firstly analyze the generation mechanism of intercarrier interference in OFDM. Then we propose an O(N log₂N) complexity ICI equalizer for OFDM systems in the presence of double selective fading which is mainly bases on FFT operation. Simulation result shows that with only 6 iterations LCD-FFT can achieve better performance than the LS-equalizer. After 10 iterations LCD-FFT performs almost the same as MMSE equalizer.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.7.2043/_p

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@ARTICLE{e89-b_7_2043,
author={Feng YANG, WenJun ZHANG, ShuRong JIAO, Xiaoyun HOU, },
journal={IEICE TRANSACTIONS on Communications},
title={Low Complexity Intercarrier Interference Equalization Technique in OFDM System},
year={2006},
volume={E89-B},
number={7},
pages={2043-2049},
abstract={Intercarrier interference will cause the loss of subchannel orthogonality and increase the error floor in proportion to the Doppler frequency. In this paper, we firstly analyze the generation mechanism of intercarrier interference in OFDM. Then we propose an O(N log₂N) complexity ICI equalizer for OFDM systems in the presence of double selective fading which is mainly bases on FFT operation. Simulation result shows that with only 6 iterations LCD-FFT can achieve better performance than the LS-equalizer. After 10 iterations LCD-FFT performs almost the same as MMSE equalizer.},
keywords={},
doi={10.1093/ietcom/e89-b.7.2043},
ISSN={1745-1345},
month={July},}

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TY - JOUR
TI - Low Complexity Intercarrier Interference Equalization Technique in OFDM System
T2 - IEICE TRANSACTIONS on Communications
SP - 2043
EP - 2049
AU - Feng YANG
AU - WenJun ZHANG
AU - ShuRong JIAO
AU - Xiaoyun HOU
PY - 2006
DO - 10.1093/ietcom/e89-b.7.2043
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2006
AB - Intercarrier interference will cause the loss of subchannel orthogonality and increase the error floor in proportion to the Doppler frequency. In this paper, we firstly analyze the generation mechanism of intercarrier interference in OFDM. Then we propose an O(N log₂N) complexity ICI equalizer for OFDM systems in the presence of double selective fading which is mainly bases on FFT operation. Simulation result shows that with only 6 iterations LCD-FFT can achieve better performance than the LS-equalizer. After 10 iterations LCD-FFT performs almost the same as MMSE equalizer.
ER -