Artículo
Oscillatory Neural Networks Using VO2 Based Phase Encoded Logic
Autor/es | Núñez Martínez, Juan
Avedillo de Juan, María José Jiménez, Manuel Quintana Toledo, José María Todri Sanial, Aida Corti, Elisabetta Karg, Siegfried Linares Barranco, Bernabé |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-07-07 |
Publicado en |
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Resumen | Nano-oscillators based on phase-transition materials are being explored for the implementation of different non-conventional computing paradigms. In particular, vanadium dioxide (VO2) devices are used to design autonomous ... Nano-oscillators based on phase-transition materials are being explored for the implementation of different non-conventional computing paradigms. In particular, vanadium dioxide (VO2) devices are used to design autonomous non-linear oscillators from which oscillatory neural networks (ONNs) can be developed. In this work, we propose a new architecture for ONNs in which sub-harmonic injection locking (SHIL) is exploited to ensure that the phase information encoded in each neuron can only take two values. In this sense, the implementation of ONNs from neurons that inherently encode information with two-phase values has advantages in terms of robustness and tolerance to variability present in VO2 devices. Unlike conventional interconnection schemes, in which the sign of the weights is coded in the value of the resistances, in our proposal the negative (positive) weights are coded using static inverting (non-inverting) logic at the output of the oscillator. The operation of the proposed architecture is shown for pattern recognition applications. |
Agencias financiadoras | European Union (UE). H2020 European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | 871501
TEC2017-87052-P |
Cita | Núñez Martínez, J., Avedillo de Juan, M.J., Jiménez, M., Quintana Toledo, J.M., Todri Sanial, A., Corti, E.,...,Linares Barranco, B. (2021). Oscillatory Neural Networks Using VO2 Based Phase Encoded Logic. Frontiers in Neuroscience, 15, 655823. |
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