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- W4200612070 abstract "Existing wideband beampattern synthesis methods usually require multiple beamformers, each corresponding to one frequency bin, which results in excessive resource consumption in engineering practice. To alleviate the resource consumption of wideband array beamforming, we propose a novel time-domain wideband digital beamformer that can control the beam shape over the whole bandwidth for interference mitigation by using only one set of amplitude–phase weights and integer time delay filters. To tackle the resultant optimization problem, two effective algorithms are introduced, and both can solve the problem within polynomial time. One is an alternating optimization algorithm that decomposes the original problem into multiple tractable subproblems iteratively. The other is the convex approximation algorithm that transforms the original problem into a series of second-order cone programming problems iteratively. The two algorithms exhibit their respective advantages in terms of convergence and computational complexity. Extensive numerical examples are presented to evaluate the proposed time-domain wideband beamforming strategy, highlighting that it can form a deep notch in any interested spatial–spectral region to suppress the strong interferences." @default.
- W4200612070 created "2021-12-31" @default.
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- W4200612070 date "2022-05-01" @default.
- W4200612070 modified "2023-10-14" @default.
- W4200612070 title "Wideband Beampattern Synthesis Using Single Digital Beamformer With Integer Time Delay Filters" @default.
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- W4200612070 doi "https://doi.org/10.1109/tap.2021.3137460" @default.
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