State-Space Realizations of Periodic Convolutional Codes
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Título: | State-Space Realizations of Periodic Convolutional Codes |
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Autor/es: | Fornasini, Ettore | Napp, Diego | Pereira, Ricardo | Pinto, Raquel | Rocha, Paula |
Grupo/s de investigación o GITE: | Grupo de Álgebra y Geometría (GAG) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Matemáticas |
Palabras clave: | Periodic systems | Convolutional codes | Realizations |
Fecha de publicación: | 4-oct-2022 |
Editor: | Society for Industrial and Applied Mathematics |
Cita bibliográfica: | SIAM Journal on Control and Optimization. 2022, 60(5): 2927-2946. https://doi.org/10.1137/21M1452172 |
Resumen: | Convolutional codes are discrete linear systems over a finite field and can be defined as F[d]-modules, where F[d] is the ring of polynomials with coefficient in a finite field F. In this paper we study the algebraic properties of periodic convolutional codes of period 2 and their representation by means of input-state-output representations. We show that they can be described as F[d2]-modules and present explicit representation of the set of equivalent encoders. We investigate their state-space representation and present two different but equivalent types of state-space realizations for these codes. These novel representations can be implemented by realizing two linear time-invariant systems separately and switching the input (or the output) that is entering (or leaving) the system. We investigate their minimality and provide necessary and also sufficient conditions in terms of the reachability and observability properties of the two linear systems involved. The ideas presented here can be easily generalized for codes with period larger than 2. |
Patrocinador/es: | This work was supported by Portuguese funds through the Center for Research and Development in Mathematics and Applications (CIDMA) and the Portuguese Foundation for Science and Technology (FCT-Fundaçao para a Ciência e a Tecnologia) within project UIDB/04106/2020. It was also partially supported by Base Funding (UIDB/00147/2020) and Programmatic Funding (UIDP/00147/2020) of the Systems and Technologies Center - SYSTEC - funded by national funds through the FCT/MCTES (PIDDAC). The work of the second author was partially supported by Spanish grants PID2019-108668GB-I00 of the Ministerio de Ciencia e Innovación of the Gobierno de España and VIGROB-287 of the Universitat d'Alacant. |
URI: | http://hdl.handle.net/10045/128551 |
ISSN: | 0363-0129 (Print) | 1095-7138 (Online) |
DOI: | 10.1137/21M1452172 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2022 Society for Industrial and Applied Mathematics |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1137/21M1452172 |
Aparece en las colecciones: | INV - GAG - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Fornasini_etal_2022_SIAMJControlOptim_final.pdf | 381,92 kB | Adobe PDF | Abrir Vista previa | |
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