CUED Publications database

Tunable Stochastic Oscillator Based on Hybrid VO/TaO Device for Compressed Sensing

Bao, L and Wang, Z and Wang, B and Liu, K and Bai, G and Yu, Z and Kang, J and Ling, Y and Wu, L and Chen, Q and Niang, KM and Cai, Y and Robertson, J and Huang, R (2021) Tunable Stochastic Oscillator Based on Hybrid VO/TaO Device for Compressed Sensing. IEEE Electron Device Letters, 42. pp. 102-105. ISSN 0741-3106

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Abstract

Compressed sensing with a tunable random sampling strategy has great potential in reducing the energy/time consumption during the constant acquisition of external information, thereby it is considered one of the most promising sensing strategies in edge-terminal. In this letter, a novel tunable stochastic oscillator (TSO) based on the VO2/TaOx structure was proposed and employed as the core controlling device for compressed sensing. The TSO is jointly governed by the metal-insulator-transition (IMT) based threshold switching of the VO2 layer and the stochastic resistive switching by the TaOx layer. The tunable memristor/resistor in series can modulate the oscillation frequency of the TSO. The orthogonal matching pursuit (OMP) algorithm is implemented to reconstruct the compressed sparse signals, demonstrating a good performance of TSO in compressed sensing.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 29 Jan 2021 22:38
Last Modified: 13 Apr 2021 10:15
DOI: 10.1109/LED.2020.3037779