A Pilot Assisted Beamforming Scheme with Interference Resistant Angle of Arrival Estimation for OFDM Systems

Yung-Fang CHEN; Fang-Shuo TSENG

doi:10.1093/ietcom/e89-b.1.132

A Pilot Assisted Beamforming Scheme with Interference Resistant Angle of Arrival Estimation for OFDM Systems

Yung-Fang CHEN, Fang-Shuo TSENG

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In this paper, we propose an angle of arrival (AOA)-based beamforming structure with strong interference resistant capability for OFDM systems. First, we present novel interference resistant angle of arrival (AOA) estimation schemes for each multipath without training sequences or symbols as the pre-processing of the proposed structure. The generalized sidelobe canceler (GSC) structure is thus applied with the AOA information to avoid calculating the beamforming weight vector individually on a per subcarrier basis, wherein the GSC structure with the reduced-rank multistage Wiener filter (MSWF) is adopted. We also propose a signal transformation scheme to improve performance before the signals are fed into the GSC receiver. The proposed receiver offers better performance than the GSC form of the constrained Wiener filter-based receiver due to the faster convergence property of reduced rank processing and the signal transformation scheme.

Publication: IEICE TRANSACTIONS on Communications Vol.E89-B No.1 pp.132-141

Publication Date: 2006/01/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e89-b.1.132

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Yung-Fang CHEN, Fang-Shuo TSENG, "A Pilot Assisted Beamforming Scheme with Interference Resistant Angle of Arrival Estimation for OFDM Systems" in IEICE TRANSACTIONS on Communications, vol. E89-B, no. 1, pp. 132-141, January 2006, doi: 10.1093/ietcom/e89-b.1.132.
Abstract: In this paper, we propose an angle of arrival (AOA)-based beamforming structure with strong interference resistant capability for OFDM systems. First, we present novel interference resistant angle of arrival (AOA) estimation schemes for each multipath without training sequences or symbols as the pre-processing of the proposed structure. The generalized sidelobe canceler (GSC) structure is thus applied with the AOA information to avoid calculating the beamforming weight vector individually on a per subcarrier basis, wherein the GSC structure with the reduced-rank multistage Wiener filter (MSWF) is adopted. We also propose a signal transformation scheme to improve performance before the signals are fed into the GSC receiver. The proposed receiver offers better performance than the GSC form of the constrained Wiener filter-based receiver due to the faster convergence property of reduced rank processing and the signal transformation scheme.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.1.132/_p

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@ARTICLE{e89-b_1_132,
author={Yung-Fang CHEN, Fang-Shuo TSENG, },
journal={IEICE TRANSACTIONS on Communications},
title={A Pilot Assisted Beamforming Scheme with Interference Resistant Angle of Arrival Estimation for OFDM Systems},
year={2006},
volume={E89-B},
number={1},
pages={132-141},
abstract={In this paper, we propose an angle of arrival (AOA)-based beamforming structure with strong interference resistant capability for OFDM systems. First, we present novel interference resistant angle of arrival (AOA) estimation schemes for each multipath without training sequences or symbols as the pre-processing of the proposed structure. The generalized sidelobe canceler (GSC) structure is thus applied with the AOA information to avoid calculating the beamforming weight vector individually on a per subcarrier basis, wherein the GSC structure with the reduced-rank multistage Wiener filter (MSWF) is adopted. We also propose a signal transformation scheme to improve performance before the signals are fed into the GSC receiver. The proposed receiver offers better performance than the GSC form of the constrained Wiener filter-based receiver due to the faster convergence property of reduced rank processing and the signal transformation scheme.},
keywords={},
doi={10.1093/ietcom/e89-b.1.132},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - A Pilot Assisted Beamforming Scheme with Interference Resistant Angle of Arrival Estimation for OFDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 132
EP - 141
AU - Yung-Fang CHEN
AU - Fang-Shuo TSENG
PY - 2006
DO - 10.1093/ietcom/e89-b.1.132
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2006
AB - In this paper, we propose an angle of arrival (AOA)-based beamforming structure with strong interference resistant capability for OFDM systems. First, we present novel interference resistant angle of arrival (AOA) estimation schemes for each multipath without training sequences or symbols as the pre-processing of the proposed structure. The generalized sidelobe canceler (GSC) structure is thus applied with the AOA information to avoid calculating the beamforming weight vector individually on a per subcarrier basis, wherein the GSC structure with the reduced-rank multistage Wiener filter (MSWF) is adopted. We also propose a signal transformation scheme to improve performance before the signals are fed into the GSC receiver. The proposed receiver offers better performance than the GSC form of the constrained Wiener filter-based receiver due to the faster convergence property of reduced rank processing and the signal transformation scheme.
ER -