IEICE TRANSACTIONS on Communications
A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems
Summary :
Conventional orthogonal frequency division multiplexing (OFDM) system utilizes cyclic prefix (CP) to remove the channel-induced inter-symbol interference (ISI) at the cost of lower spectral efficiency. In this paper, a generalized sidelobe canceller (GSC) based equalizer for ISI suppression is proposed for uplink multi-antenna OFDM systems without CP. Based on the block representation of the CP-free OFDM system, there is a natural formulation of the ISI suppression problem under the GSC framework. By further exploiting the signal and ISI signature matrix structures, a computationally efficient partially adaptive (PA) implementation of the GSC-based equalizer is proposed for complexity reduction. The proposed scheme can be extended for the design of a pre-equalizer, which pre-suppresses the ISI and realizes CP-free downlink transmission to ease the computational burden of the mobile unit (MU). Simulation results show that the proposed GSC-based solutions yield equalization performances almost identical to that obtained by the conventional CP-based OFDM systems and are highly resistant to the increase in channel delay spread.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E89-B No.1 pp.88-99
- Publication Date
- 2006/01/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1093/ietcom/e89-b.1.88
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Keyword
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Chih-Yuan LIN, Jwo-Yuh WU, Ta-Sung LEE, "A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems" in IEICE TRANSACTIONS on Communications,
vol. E89-B, no. 1, pp. 88-99, January 2006, doi: 10.1093/ietcom/e89-b.1.88.
Abstract: Conventional orthogonal frequency division multiplexing (OFDM) system utilizes cyclic prefix (CP) to remove the channel-induced inter-symbol interference (ISI) at the cost of lower spectral efficiency. In this paper, a generalized sidelobe canceller (GSC) based equalizer for ISI suppression is proposed for uplink multi-antenna OFDM systems without CP. Based on the block representation of the CP-free OFDM system, there is a natural formulation of the ISI suppression problem under the GSC framework. By further exploiting the signal and ISI signature matrix structures, a computationally efficient partially adaptive (PA) implementation of the GSC-based equalizer is proposed for complexity reduction. The proposed scheme can be extended for the design of a pre-equalizer, which pre-suppresses the ISI and realizes CP-free downlink transmission to ease the computational burden of the mobile unit (MU). Simulation results show that the proposed GSC-based solutions yield equalization performances almost identical to that obtained by the conventional CP-based OFDM systems and are highly resistant to the increase in channel delay spread.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.1.88/_p
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@ARTICLE{e89-b_1_88,
author={Chih-Yuan LIN, Jwo-Yuh WU, Ta-Sung LEE, },
journal={IEICE TRANSACTIONS on Communications},
title={A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems},
year={2006},
volume={E89-B},
number={1},
pages={88-99},
abstract={Conventional orthogonal frequency division multiplexing (OFDM) system utilizes cyclic prefix (CP) to remove the channel-induced inter-symbol interference (ISI) at the cost of lower spectral efficiency. In this paper, a generalized sidelobe canceller (GSC) based equalizer for ISI suppression is proposed for uplink multi-antenna OFDM systems without CP. Based on the block representation of the CP-free OFDM system, there is a natural formulation of the ISI suppression problem under the GSC framework. By further exploiting the signal and ISI signature matrix structures, a computationally efficient partially adaptive (PA) implementation of the GSC-based equalizer is proposed for complexity reduction. The proposed scheme can be extended for the design of a pre-equalizer, which pre-suppresses the ISI and realizes CP-free downlink transmission to ease the computational burden of the mobile unit (MU). Simulation results show that the proposed GSC-based solutions yield equalization performances almost identical to that obtained by the conventional CP-based OFDM systems and are highly resistant to the increase in channel delay spread.},
keywords={},
doi={10.1093/ietcom/e89-b.1.88},
ISSN={1745-1345},
month={January},}
Copy
TY - JOUR
TI - A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 88
EP - 99
AU - Chih-Yuan LIN
AU - Jwo-Yuh WU
AU - Ta-Sung LEE
PY - 2006
DO - 10.1093/ietcom/e89-b.1.88
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2006
AB - Conventional orthogonal frequency division multiplexing (OFDM) system utilizes cyclic prefix (CP) to remove the channel-induced inter-symbol interference (ISI) at the cost of lower spectral efficiency. In this paper, a generalized sidelobe canceller (GSC) based equalizer for ISI suppression is proposed for uplink multi-antenna OFDM systems without CP. Based on the block representation of the CP-free OFDM system, there is a natural formulation of the ISI suppression problem under the GSC framework. By further exploiting the signal and ISI signature matrix structures, a computationally efficient partially adaptive (PA) implementation of the GSC-based equalizer is proposed for complexity reduction. The proposed scheme can be extended for the design of a pre-equalizer, which pre-suppresses the ISI and realizes CP-free downlink transmission to ease the computational burden of the mobile unit (MU). Simulation results show that the proposed GSC-based solutions yield equalization performances almost identical to that obtained by the conventional CP-based OFDM systems and are highly resistant to the increase in channel delay spread.
ER -
English
