Distance Computation Based on Coupled Spin-Torque Oscillators: Application to Image Processing
- Authors
- Koo, Minsuk; Pufall, M. R.; Shim, Yong; Kos, A. B.; Csaba, Gyorgy; Porod, Wolfgang; Rippard, W. H.; Roy, Kaushik
- Issue Date
- Sep-2020
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW APPLIED, v.14, no.3
- Journal Title
- PHYSICAL REVIEW APPLIED
- Volume
- 14
- Number
- 3
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63275
- DOI
- 10.1103/PhysRevApplied.14.034001
- ISSN
- 2331-7019
2331-7019
- Abstract
- Recent research on nano-oscillators has shown the possibility of using a coupled-oscillator network as a core-computing primitive for non-Boolean computation. The spin-torque oscillator (STO) is an attractive candidate because it is CMOS compatible, highly integrable, scalable, and frequency and phase tunable. Based on these promising features, we propose an alternative coupled-oscillator-based architecture for hybrid spintronic and CMOS hardware that computes a multidimensional norm. The hybrid system, com posed of an array of four injection-locked STOs and a CMOS detector, is experimentally demonstrated. The measured performance is then used as the input to simulations that demonstrate the hybrid system as both a distance metric and a convolution computational primitive for image-processing applications. Energy and scaling analysis shows that the STO-based coupled-oscillatory system has a higher efficiency than the CMOS-based system with an order of magnitude faster computation speed in distance computation for high-dimensional input vectors.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63275)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.