MISC

2018年1月1日

Detection of Digitally Phase-Modulated Signals Utilizing Mechanical Vibration of CNT Cantilever

IEEE Transactions on Nanotechnology
  • Yukihiro Tadokoro
  • ,
  • Yutaka Ohno
  • ,
  • Hiroya Tanaka

17
1
開始ページ
84
終了ページ
92
記述言語
英語
掲載種別
速報,短報,研究ノート等(学術雑誌)
DOI
10.1109/TNANO.2017.2765310
出版者・発行元
Institute of Electrical and Electronics Engineers Inc.

Communication between tiny sensor nodes is an important function in future sensing applications and services. This paper contributes to the design of both the front end and the demodulator of nanoscale receivers. A nanoscale phase detector is proposed that provides two important functions at nanoscale: Reception of an incoming carrier signal in the megahertz band, and detection of the carrier phase which contains the information of the transmitted digital data. These two functions are achieved by the mechanical vibration of the tip of a carbon nanotube. The proposed detector was theoretically analyzed in terms of its communication aspects
although a digitally phase-modulated signal could be detected in nanoscale, the effective received signal power showed to be strongly reduced in a key performance measure in communication systems, bit error rate. However, the present analysis reveals that the output of the proposed detector has two frequency components, which describe the transmitted data. To take the advantage of this characteristic, a demodulator using maximum-ratio combining is introduced in this paper. The optimal weights used to combine the components were analytically derived to improve the bit error rate performance. The effectiveness of the nanoscale phase detector is numerically demonstrated, and the gain relative to the demodulation achieved using a conventional simple correlator is established.

リンク情報
DOI
https://doi.org/10.1109/TNANO.2017.2765310

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