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      Implementación Hardware-Software de un Sistema de Estimación de DOA con Súper Resolución Translated title: Super Resolution DOA Estimation System Hardware-Software Implementation

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          Abstract

          RESUMEN En este artículo se presenta una implementación combinada hardware-software de un sistema de estimación de la dirección de arribo (DOA, por sus siglas en inglés) con súper resolución de señales de radiofrecuencia. Luego de la simulación computacional del método escogido, se diseña e implementa el sistema con empleo de dos transceptores de microondas de banda ancha. Los transceptores se controlan por un kit de FPGA conectado a través de un adaptador PCI Express a una computadora de escritorio. Una interfaz gráfica se desarrolla para visualizar el espectro espacial y validar el correcto funcionamiento del sistema. El procedimiento seguido muestra las principales cuestiones, criterios de diseño y requerimientos a la hora de implementar este tipo de métodos. Además, se propone una solución de hardware modular genérica y flexible sin la necesidad de diseño y fabricación de placas de circuito impreso personalizadas.

          Translated abstract

          ABSTRACT This paper presents a super resolution Direction of Arrival (DOA) estimation system based on a combined hardware-software implementation for radio frequency signals. After computational simulation of the chosen method, the system is designed and implemented using two multichannel wideband microwave transceivers controlled by a FPGA board connected to a host computer with a PCI Express adapter. A graphic interface is developed to visualize the spatial spectrum and validate the right system performance. The followed procedure shows up the main issues and requirements when this kind of method is implemented. Moreover, a generic modular and flexible hardware solution is proposed where no custom printed circuit board design and fabrication is needed.

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          Multiple emitter location and signal parameter estimation

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            Scalable ESPRIT Processor for Direction-of-Arrival Estimation of Frequency Modulated Continuous Wave Radar

            The estimation of signal parameters via rotational invariance techniques (ESPRIT) is an algorithm that uses the shift-invariant properties of the array antenna to estimate the direction-of-arrival (DOA) of signals received in the array antenna. Since the ESPRIT algorithm requires high-complexity operations such as covariance matrix and eigenvalue decomposition, a hardware processor must be implemented such that the DOA is estimated in real time. Additionally, the ESPRIT processor should support a scalable number of antenna configuration for DOA estimation in various applications because the performance of ESPRIT depends on the number of antennas. Therefore, we propose an ESPRIT processor that supports two to eight scalable antenna configuration. In addition, since the proposed ESPRIT processor is based on multiple invariances (MI) algorithm, it can achieve a much better performance than the existing ESPRIT processor. The execution time is reduced by simplifying the Jacobi method, which has the most significant computational complexity for calculating eigenvalue decomposition (EVD) in ESPRIT. Moreover, the ESPRIT processor was designed using hardware description language (HDL), and an FPGA-based verification was performed. The proposed ESPRIT processor was implemented with 10,088 slice registers, 18,207 LUTs, and 80 DSPs, and the slice register, LUT, and DSP were reduced by up to 71.45%, 54.5%, and 68.38%, respectively, compared to the existing structure.
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              FPGA-based Hardware Implementation of Computationally Efficient Multi-Source DOA Estimation Algorithms

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                Author and article information

                Journal
                eac
                Ingeniería Electrónica, Automática y Comunicaciones
                EAC
                Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae (La Habana, , Cuba )
                1815-5928
                April 2022
                : 43
                : 1
                : 16-32
                Affiliations
                [1] La Habana orgnameCentro de Investigación y Desarrollo de Electrónica y Mecánica “CID MECATRONICS” Cuba
                Article
                S1815-59282022000100016 S1815-5928(22)04300100016
                9c0dc9cc-382e-4232-a7ea-0e27234414cb

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 14 April 2022
                : 21 December 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 17
                Product

                SciELO Cuba

                Categories
                ARTICULOS ORIGINALES

                smart antennas,súper resolución,MUSIC,super resolution,DOA,antenas inteligentes

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