Imperceptible Visible Light Communications Based on Just Imperceptible Difference
| Autor: | Xuefen Chi, Linlin Zhao, Hanyang Shi, Yan Zhao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science Flicker Visible light communication 020206 networking & telecommunications 02 engineering and technology Computer Science Applications law.invention law Modeling and Simulation Modulation (music) 0202 electrical engineering electronic engineering information engineering Psychophysics Computer vision Artificial intelligence Electrical and Electronic Engineering business Power control Light-emitting diode |
| Zdroj: | IEEE Communications Letters. 23:2279-2283 |
| ISSN: | 2373-7891 1089-7798 |
| DOI: | 10.1109/lcomm.2019.2942025 |
| Popis: | Indoor visible light communications (VLCs) have a major disadvantage that communications are not sustentative when and where artificial lightings are unavailable (e.g., bedroom with dim lighting, cinema). Thus, different from WiFi, its counterpart in RF, VLC is not “always on”. We promote the concept of “always on” VLC system and devote to realizing imperceptible VLC (iVLC). Considering flicker is relative easy to overcome, the essential restriction of this question is glaring sensation of people. In this letter, just imperceptible difference (JID) is proposed as a basic metric in iVLC system design, which is the maximum imperceptible difference in intensity between two physical stimuli and derived from psychophysics laws. Relying on JID, we obtain the upper bound of LED power below which a communication link does not annoy people in room under weak even dark lighting. Numerical results show that iVLC system is available through power control, modulation, and components design. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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