| Texto completo | |
| Autor(es): |
Mohammadzadeh, Saeed
;
Nascimento, Vitor Heloiz
;
de Lamare, Rodrigo C.
;
Kukrer, Osman
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS; v. 59, n. 4, p. 11-pg., 2023-08-01. |
| Resumo | |
In this work, a simple and effective robust adaptive beamforming technique is proposed for uniform linear arrays, which is based on the power spectral estimation and uncertainty region (PSEUR) of the interference plus noise (IPN) components. In particular, two algorithms are presented to find the angular sector of interference in every snapshot based on the adopted spatial uncertainty region of the interference direction. Moreover, a power spectrum is introduced based on the estimation of the power of interference and noise components, which allows the development of a robust approach to IPN covariance matrix reconstruction. The proposed method has two main advantages. First, an angular region that contains the interference direction is updated based on the statistics of the array data. Second, the proposed IPN-PSEUR method avoids estimating the power spectrum of the whole range of possible directions of the interference sector. Simulation results show that the performance of the proposed IPN-PSEUR beamformer is almost always close to the optimal value across a wide range of signal-to-noise ratios. (AU) | |
| Processo FAPESP: | 18/12579-7 - Tecnologias habilitadores para a Internet das Coisas |
| Beneficiário: | Vitor Heloiz Nascimento |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 19/19387-9 - Técnicas de processamento de sinais em beamforming e esquemas de codificação em sistemas de comunicações de IoT |
| Beneficiário: | Saeed Mohammadzadeh |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |