Academic Journal
New convex approaches to general MVDR robust adaptive beamforming problems
| العنوان: | New convex approaches to general MVDR robust adaptive beamforming problems |
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| المؤلفون: | Yao Zhao, Qingsong Liu, He Tian, Mingfan Luo, Bingo Wing‐Kuen Ling, Zhe Zhang |
| المصدر: | Electronics Letters, Vol 59, Iss 18, Pp n/a-n/a (2023) |
| بيانات النشر: | Wiley, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Electrical engineering. Electronics. Nuclear engineering |
| مصطلحات موضوعية: | array signal processing, convex programming, relaxation theory, Electrical engineering. Electronics. Nuclear engineering, TK1-9971 |
| الوصف: | Abstract Consider general minimum variance distortionless response (MVDR) robust adaptive beamforming problems based on the optimal estimation for both the desired signal steering vector and the interference‐plus‐noise covariance (INC) matrix. The optimal robust adaptive beamformer design problem is an array output power maximization problem, subject to three constraints on the steering vector, namely, a (convex or nonconvex) quadratic constraint ensuring that the direction‐of‐arrival (DOA) of the desired signal is separated from the DOA region of all linear combinations of the interference steering vectors, a double‐sided norm constraint, and a similarity constraint; as well as a ball constraint on the INC matrix, which is centered at a given data sample covariance matrix. To tackle the nonconvex problem, a new tightened semidefinite relaxation (SDR) approach is proposed to output a globally optimal solution; otherwise, a sequential convex approximation (SCA) method is established to return a locally optimal solution. The simulation results show that the MVDR robust adaptive beamformers based on the optimal estimation for the steering vector and the INC matrix have better performance (in terms of, e.g., the array output signal‐to‐interference‐plus‐noise ratio) than the existing MVDR robust adaptive beamformers by the steering vector estimation only. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1350-911X 0013-5194 |
| Relation: | https://doaj.org/toc/0013-5194; https://doaj.org/toc/1350-911X |
| DOI: | 10.1049/ell2.12957 |
| URL الوصول: | https://doaj.org/article/c0482bf58db04e73811d64f338bff23d |
| رقم الانضمام: | edsdoj.0482bf58db04e73811d64f338bff23d |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1350911X 00135194 |
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| DOI: | 10.1049/ell2.12957 |