Derivative Constraint Narrowband Array Beamformer with New IQML Algorithm for Wideband and Coherent Jammers Suppression

Chung-Yao CHANG; Shiunn-Jang CHERN

Derivative Constraint Narrowband Array Beamformer with New IQML Algorithm for Wideband and Coherent Jammers Suppression

Chung-Yao CHANG, Shiunn-Jang CHERN

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In this paper, a new narrowband beamformer with derivative constraint is developed for wideband and coherent jammers suppression. The so-called IQML algorithm with linear constraint, which is used to estimate the unknown directions of the jammers in signal-free environment, is shown to be an inappropriate constraint estimator. In this paper, a new IQML algorithm with a norm constraint is considered, which is a consistent estimator and can be used to achieve desired performance. It can be also employed in the CDMA system for MAI suppression. We show that it outperforms the approach with the linear constraint used in the narrowband beamformer, in terms of directional pattern, output SINR and nulling capability for wideband and coherent jammers suppression.

Publication: IEICE TRANSACTIONS on Communications Vol.E86-B No.2 pp.829-837

Publication Date: 2003/02/01

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Type of Manuscript: PAPER

Category: Antenna and Propagation

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Chung-Yao CHANG, Shiunn-Jang CHERN, "Derivative Constraint Narrowband Array Beamformer with New IQML Algorithm for Wideband and Coherent Jammers Suppression" in IEICE TRANSACTIONS on Communications, vol. E86-B, no. 2, pp. 829-837, February 2003, doi: .
Abstract: In this paper, a new narrowband beamformer with derivative constraint is developed for wideband and coherent jammers suppression. The so-called IQML algorithm with linear constraint, which is used to estimate the unknown directions of the jammers in signal-free environment, is shown to be an inappropriate constraint estimator. In this paper, a new IQML algorithm with a norm constraint is considered, which is a consistent estimator and can be used to achieve desired performance. It can be also employed in the CDMA system for MAI suppression. We show that it outperforms the approach with the linear constraint used in the narrowband beamformer, in terms of directional pattern, output SINR and nulling capability for wideband and coherent jammers suppression.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e86-b_2_829/_p

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@ARTICLE{e86-b_2_829,
author={Chung-Yao CHANG, Shiunn-Jang CHERN, },
journal={IEICE TRANSACTIONS on Communications},
title={Derivative Constraint Narrowband Array Beamformer with New IQML Algorithm for Wideband and Coherent Jammers Suppression},
year={2003},
volume={E86-B},
number={2},
pages={829-837},
abstract={In this paper, a new narrowband beamformer with derivative constraint is developed for wideband and coherent jammers suppression. The so-called IQML algorithm with linear constraint, which is used to estimate the unknown directions of the jammers in signal-free environment, is shown to be an inappropriate constraint estimator. In this paper, a new IQML algorithm with a norm constraint is considered, which is a consistent estimator and can be used to achieve desired performance. It can be also employed in the CDMA system for MAI suppression. We show that it outperforms the approach with the linear constraint used in the narrowband beamformer, in terms of directional pattern, output SINR and nulling capability for wideband and coherent jammers suppression.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - Derivative Constraint Narrowband Array Beamformer with New IQML Algorithm for Wideband and Coherent Jammers Suppression
T2 - IEICE TRANSACTIONS on Communications
SP - 829
EP - 837
AU - Chung-Yao CHANG
AU - Shiunn-Jang CHERN
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2003
AB - In this paper, a new narrowband beamformer with derivative constraint is developed for wideband and coherent jammers suppression. The so-called IQML algorithm with linear constraint, which is used to estimate the unknown directions of the jammers in signal-free environment, is shown to be an inappropriate constraint estimator. In this paper, a new IQML algorithm with a norm constraint is considered, which is a consistent estimator and can be used to achieve desired performance. It can be also employed in the CDMA system for MAI suppression. We show that it outperforms the approach with the linear constraint used in the narrowband beamformer, in terms of directional pattern, output SINR and nulling capability for wideband and coherent jammers suppression.
ER -