Improvement of the communication performances in nano-scale sensor nodes exloiting stochastic resonance

• Project/Area Number: 17K14690
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Toyota Central R&D Lab., Inc.
• Principal Investigator: Tadokoro Yukihiro 株式会社豊田中央研究所, 戦略先端研究領域 ナノセンシングプログラム, --- (20446959)
• Project Period (FY): 2017-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 確率共鳴現象 / ナノスケール機械振動子 / 電界電子放出 / Nanomechanical resonator / 確率共鳴 / 雑音支援 / Field emission current / NEMS / 先端的通信 / スマートセンサ情報システム / 情報通信工学 / 統計力学

Outline of Final Research Achievements

Due to ultra-small size of nanoscale sensor nodes, noise is one of the major issues for high-reliable communication and sensing. In this research project, we explored the possibility of suppressing the noise by exploiting a nonlinear phenomenon of Stochastic resonance. In the first year of this project, we focused on the radio-antenna, which is installed at the front-end of the communicating part of the nanoscale sensor nodes, and the output current was analytically demonstrated to be amplified by this phenomenon. In the second year, we found the nonlinear behavior in the mechanism of signal reception of the nanoscale sensor node. This behavior is the source of observing the phenomenon, which indicates the possibility of further improvements in the noise suppression.

Academic Significance and Societal Importance of the Research Achievements

通常、雑音を抑えるためにはローパスフィルタ等のフィルタリング、最尤推定などの信号処理手法がとられる。このような既存手法の雑音抑圧性能は理論的に保証されているが、その実現のためには追加の専用ハードウェアや高負荷な処理が必要となり、ハードウェアサイズに限りのあるナノスケール・センサノードでは採用できない。本研究では、問題となる雑音を逆に活かすという逆転の発想により検討を行い、簡易な雑音の抑圧、感度改善の可能性を見出した。これによりナノスケール・センサノードの感度改善の方策が一つ示されたことになり，今後の研究開発の指針として活用できるものである．

Research Products

• [Int'l Joint Research] Michigan State University(米国)
• [Int'l Joint Research] Michigan state university(米国)
• [Journal Article] Driven nonlinear nanomechanical resonators as digital signal detectors (2018)
  • Author(s): Tadokoro Yukihiro、Tanaka Hiroya、Dykman M. I.
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 11284-11284
  • DOI: 10.1038/s41598-018-29572-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Noise-enhanced field emission current from a carbon nanotube cantilever (2018)
  • Author(s): Yukihiro Tadokoro, Keita Funayama, Hiroya Tanaka
  • Journal Title: Electronics Letters Volume: in press
  • Peer Reviewed
• [Presentation] Driven Nonlinear Nanomechanical Resonators as Digital Signal Detectors (2019)
  • Author(s): Yukihiro Tadokoro, Hiroya Tanaka, and Mark I. Dykman
  • Organizer: 2019 International Symposium on Nonlinear Theory and Its Applications
  • Int'l Joint Research
• [Presentation] Signal detection with a noisy nanomechanical bifurcation amplifier (2018)
  • Author(s): Yukihiro Tadokoro, Hiroya Tanaka, M. I. Dykman
  • Organizer: 8th International Conference on Unsolved Problems on Noise (UPoN)
  • Int'l Joint Research
• [Presentation] Stochastic resonance in field emission current on carbon nanotube (2018)
  • Author(s): Yukihiro Tadokoro, Keita Funayama, Hiroya Tanaka
  • Organizer: 2018 International Symposium on Nonlinear Theory and its Applications
  • Int'l Joint Research