Low-Complexity ICI Cancellation Based on BEM for OFDM Systems over Doubly Selective Channels

Suyue LI; Jian XIONG; Peng CHENG; Lin GUI; Youyun XU

doi:10.1587/transcom.E96.B.1588

Low-Complexity ICI Cancellation Based on BEM for OFDM Systems over Doubly Selective Channels

Suyue LI, Jian XIONG, Peng CHENG, Lin GUI, Youyun XU

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One major challenge to implement orthogonal frequency division multiplexing (OFDM) systems over doubly selective channels is the non-negligible intercarrier interference (ICI), which significantly degrades the system performance. Existing solutions to cope with ICI include zero-forcing (ZF), minimum mean square error (MMSE) and other linear or nonlinear equalization methods. However, these schemes fail to achieve a satisfactory tradeoff between performance and computational complexity. To address this problem, in this paper we propose two novel nonlinear ICI cancellation techniques, which are referred to as parallel interference cancelation (PIC) and hybrid interference cancelation (HIC). Taking advantage of the special structure of basis expansion model (BEM) based channel matrices, our proposed schemes enjoy low computational complexity and are capable of cancelling ICI effectively. Moreover, since the proposed schemes can flexibly select different basis functions and be independent of the channel statistics, they are applicable to practical OFDM based systems such as DVB-T2 over doubly selective channels. Theoretical analysis and simulation results both confirm their performance-complexity advantages in comparison with some existing methods.

Publication: IEICE TRANSACTIONS on Communications Vol.E96-B No.6 pp.1588-1596

Publication Date: 2013/06/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E96.B.1588

Type of Manuscript: PAPER

Category: Terrestrial Wireless Communication/Broadcasting Technologies

Authors

Suyue LI
  Shanghai Jiao Tong University
Jian XIONG
  Shanghai Jiao Tong University
Peng CHENG
  Shanghai Jiao Tong University
Lin GUI
  Shanghai Jiao Tong University
Youyun XU
  Shanghai Jiao Tong University

Keyword

arbitrary BEM, doubly selective channels, low-complexity ICI cancellation

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Suyue LI, Jian XIONG, Peng CHENG, Lin GUI, Youyun XU, "Low-Complexity ICI Cancellation Based on BEM for OFDM Systems over Doubly Selective Channels" in IEICE TRANSACTIONS on Communications, vol. E96-B, no. 6, pp. 1588-1596, June 2013, doi: 10.1587/transcom.E96.B.1588.
Abstract: One major challenge to implement orthogonal frequency division multiplexing (OFDM) systems over doubly selective channels is the non-negligible intercarrier interference (ICI), which significantly degrades the system performance. Existing solutions to cope with ICI include zero-forcing (ZF), minimum mean square error (MMSE) and other linear or nonlinear equalization methods. However, these schemes fail to achieve a satisfactory tradeoff between performance and computational complexity. To address this problem, in this paper we propose two novel nonlinear ICI cancellation techniques, which are referred to as parallel interference cancelation (PIC) and hybrid interference cancelation (HIC). Taking advantage of the special structure of basis expansion model (BEM) based channel matrices, our proposed schemes enjoy low computational complexity and are capable of cancelling ICI effectively. Moreover, since the proposed schemes can flexibly select different basis functions and be independent of the channel statistics, they are applicable to practical OFDM based systems such as DVB-T2 over doubly selective channels. Theoretical analysis and simulation results both confirm their performance-complexity advantages in comparison with some existing methods.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E96.B.1588/_p

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@ARTICLE{e96-b_6_1588,
author={Suyue LI, Jian XIONG, Peng CHENG, Lin GUI, Youyun XU, },
journal={IEICE TRANSACTIONS on Communications},
title={Low-Complexity ICI Cancellation Based on BEM for OFDM Systems over Doubly Selective Channels},
year={2013},
volume={E96-B},
number={6},
pages={1588-1596},
abstract={One major challenge to implement orthogonal frequency division multiplexing (OFDM) systems over doubly selective channels is the non-negligible intercarrier interference (ICI), which significantly degrades the system performance. Existing solutions to cope with ICI include zero-forcing (ZF), minimum mean square error (MMSE) and other linear or nonlinear equalization methods. However, these schemes fail to achieve a satisfactory tradeoff between performance and computational complexity. To address this problem, in this paper we propose two novel nonlinear ICI cancellation techniques, which are referred to as parallel interference cancelation (PIC) and hybrid interference cancelation (HIC). Taking advantage of the special structure of basis expansion model (BEM) based channel matrices, our proposed schemes enjoy low computational complexity and are capable of cancelling ICI effectively. Moreover, since the proposed schemes can flexibly select different basis functions and be independent of the channel statistics, they are applicable to practical OFDM based systems such as DVB-T2 over doubly selective channels. Theoretical analysis and simulation results both confirm their performance-complexity advantages in comparison with some existing methods.},
keywords={},
doi={10.1587/transcom.E96.B.1588},
ISSN={1745-1345},
month={June},}

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TY - JOUR
TI - Low-Complexity ICI Cancellation Based on BEM for OFDM Systems over Doubly Selective Channels
T2 - IEICE TRANSACTIONS on Communications
SP - 1588
EP - 1596
AU - Suyue LI
AU - Jian XIONG
AU - Peng CHENG
AU - Lin GUI
AU - Youyun XU
PY - 2013
DO - 10.1587/transcom.E96.B.1588
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E96-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2013
AB - One major challenge to implement orthogonal frequency division multiplexing (OFDM) systems over doubly selective channels is the non-negligible intercarrier interference (ICI), which significantly degrades the system performance. Existing solutions to cope with ICI include zero-forcing (ZF), minimum mean square error (MMSE) and other linear or nonlinear equalization methods. However, these schemes fail to achieve a satisfactory tradeoff between performance and computational complexity. To address this problem, in this paper we propose two novel nonlinear ICI cancellation techniques, which are referred to as parallel interference cancelation (PIC) and hybrid interference cancelation (HIC). Taking advantage of the special structure of basis expansion model (BEM) based channel matrices, our proposed schemes enjoy low computational complexity and are capable of cancelling ICI effectively. Moreover, since the proposed schemes can flexibly select different basis functions and be independent of the channel statistics, they are applicable to practical OFDM based systems such as DVB-T2 over doubly selective channels. Theoretical analysis and simulation results both confirm their performance-complexity advantages in comparison with some existing methods.
ER -