IEICE TRANSACTIONS on Communications
On a Novel Pre-FFT OFDM Adaptive Antenna Array for Delayed Signal Suppression
Summary :
It is well known that Orthogonal Frequency Division Multiplexing (OFDM) scheme is robust to frequency selective fading in wireless channels. However, once delayed signals beyond a guard interval of an OFDM symbol are introduced in a channel with large delay spread, inter-symbol interference causes a severe degradation in the transmission performance. In this paper, we propose a novel pre-Fast Fourier Transform (FFT) OFDM adaptive antenna array, which requires only one FFT processor at a receiver, for suppressing such delayed signals. We analytically derive the optimum weights for the beamformer based on the Maximum Signal-to-Noise-and-Interference power Ratio (SNIR) and the Minimum Mean Square Error (MMSE) criteria, respectively. Computer simulation results show its good performance even in a channel where Directions of Arrival (DoAs) of arriving waves are randomly determined.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E86-B No.6 pp.1936-1945
- Publication Date
- 2003/06/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technology
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Montree BUDSABATHON, Shuichi HANE, Yoshitaka HARA, Shinsuke HARA, "On a Novel Pre-FFT OFDM Adaptive Antenna Array for Delayed Signal Suppression" in IEICE TRANSACTIONS on Communications,
vol. E86-B, no. 6, pp. 1936-1945, June 2003, doi: .
Abstract: It is well known that Orthogonal Frequency Division Multiplexing (OFDM) scheme is robust to frequency selective fading in wireless channels. However, once delayed signals beyond a guard interval of an OFDM symbol are introduced in a channel with large delay spread, inter-symbol interference causes a severe degradation in the transmission performance. In this paper, we propose a novel pre-Fast Fourier Transform (FFT) OFDM adaptive antenna array, which requires only one FFT processor at a receiver, for suppressing such delayed signals. We analytically derive the optimum weights for the beamformer based on the Maximum Signal-to-Noise-and-Interference power Ratio (SNIR) and the Minimum Mean Square Error (MMSE) criteria, respectively. Computer simulation results show its good performance even in a channel where Directions of Arrival (DoAs) of arriving waves are randomly determined.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e86-b_6_1936/_p
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@ARTICLE{e86-b_6_1936,
author={Montree BUDSABATHON, Shuichi HANE, Yoshitaka HARA, Shinsuke HARA, },
journal={IEICE TRANSACTIONS on Communications},
title={On a Novel Pre-FFT OFDM Adaptive Antenna Array for Delayed Signal Suppression},
year={2003},
volume={E86-B},
number={6},
pages={1936-1945},
abstract={It is well known that Orthogonal Frequency Division Multiplexing (OFDM) scheme is robust to frequency selective fading in wireless channels. However, once delayed signals beyond a guard interval of an OFDM symbol are introduced in a channel with large delay spread, inter-symbol interference causes a severe degradation in the transmission performance. In this paper, we propose a novel pre-Fast Fourier Transform (FFT) OFDM adaptive antenna array, which requires only one FFT processor at a receiver, for suppressing such delayed signals. We analytically derive the optimum weights for the beamformer based on the Maximum Signal-to-Noise-and-Interference power Ratio (SNIR) and the Minimum Mean Square Error (MMSE) criteria, respectively. Computer simulation results show its good performance even in a channel where Directions of Arrival (DoAs) of arriving waves are randomly determined.},
keywords={},
doi={},
ISSN={},
month={June},}
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TY - JOUR
TI - On a Novel Pre-FFT OFDM Adaptive Antenna Array for Delayed Signal Suppression
T2 - IEICE TRANSACTIONS on Communications
SP - 1936
EP - 1945
AU - Montree BUDSABATHON
AU - Shuichi HANE
AU - Yoshitaka HARA
AU - Shinsuke HARA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2003
AB - It is well known that Orthogonal Frequency Division Multiplexing (OFDM) scheme is robust to frequency selective fading in wireless channels. However, once delayed signals beyond a guard interval of an OFDM symbol are introduced in a channel with large delay spread, inter-symbol interference causes a severe degradation in the transmission performance. In this paper, we propose a novel pre-Fast Fourier Transform (FFT) OFDM adaptive antenna array, which requires only one FFT processor at a receiver, for suppressing such delayed signals. We analytically derive the optimum weights for the beamformer based on the Maximum Signal-to-Noise-and-Interference power Ratio (SNIR) and the Minimum Mean Square Error (MMSE) criteria, respectively. Computer simulation results show its good performance even in a channel where Directions of Arrival (DoAs) of arriving waves are randomly determined.
ER -
English
