Thermodynamics-based Cognitive Demodulation for 'THz Torch' Wireless Communications Links.

ABSTRACT: The low-cost 'THz Torch' technology, which exploits the thermal infrared spectrum (ca. 10 to 100 THz), was recently introduced to provide secure low data rate communications links across short distances. In this paper, a thermodynamics-based approach is proposed for greatly enhancing the sensitivity of detection with non-stationary thermal radiation, generated by thermal emitters that have been modulated well beyond their thermal time constants. Here, cognitive demodulation is employed and, unlike all previous demonstrators, allows truly asynchronous operation by dynamically predicting the thermal transients for the next bit to be received. The result is a five-fold increase in the reported operational figure of merit (Range  ×  Bit Rate) for 'THz Torch' wireless communications links. A si

SUBMITTER: Ren H 

PROVIDER: S-EPMC7148299 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature