NDLI: Design of generalised sidelobe canceller-based adaptive wideband beamformer without pre-steering delays

Content Provider	IET Digital Library
Author	Wu, Kai Su, Tao
Abstract	Implementation errors of pre-steering (PS) delays lead to severe performance degradation in the generalised sidelobe canceller-based adaptive wideband beamformer (G-AWBF). Therefore, a G-AWBF without PS delays is proposed. To eliminate PS delays, the G-AWBF is designed in the linear space spanned by the generalised steering vector (GSV) which is defined as the Kronecker product of spatial and temporal steering vectors. Based on GSVs, the quiescent weight and blocking matrix are constructed to substitute PS delays. Compared with the conventional G-AWBF, due to the removal of PS delays, an improved signal to interference and noise ratio can be achieved with reduced system complexity. With less adaptive weights and various versions of unconstrained adaptive algorithms being applicable, the proposed G-AWBF outperforms the existing Frost-based AWBF without PS delays in terms of computational load and robustness. Numerical experiments illustrate the effectiveness and superiority of the proposed G-AWBF.
Starting Page	177
Ending Page	179
Page Count	3
ISSN	00135194
Volume Number	52
e-ISSN	1350911X
Issue Number	Issue 3, Feb (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/52/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2015.3488
Journal	Electronics Letters
Publisher Date	2015-12-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Signal Processing Array Signal Processing Blocking Matrix Delay Frost-based AWBF G-AWBF Generalised Sidelobe Canceller-based Adaptive Wideband Beamformer Generalised Steering Vector GSV Kronecker Product Linear Algebra Linear Space Spanning Matrix Algebra Numerical Analysis Pre-steering Delay PS Delay Quiescent Weight Reduced System Complexity Signal Processing And Detection Signal Processing Theory Spatial Steering Vector Temporal Steering Vector Unconstrained Adaptive Algorithm Vector
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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