Employing NRZI Code for Reducing Background Noise in LED Visible Light Communication

Liu, Y. F.; Yeh, Chien‐Hung; Wang, Y. C.; Chow, Chi‐Wai

doi:10.1364/oecc_ps.2013.tupr_10

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…There have also been reports emphasizing the color conversion capabilities of the boundary layers, which can in effect replace the phosphors around the GaN LED [16,[18][19][20][21]. The use of these external emitters as active sources can alter the communication characteristics [22,23]. The introduction of active contributions which can alter the source-generated signal features, or more specifically the noise characteristics forms the central theme of the paper.…”

Section: Introductionmentioning

confidence: 99%

Influence of non-line of sight luminescent emitters in visible light communication systems

Ghorai¹,

Walvekar²,

Nayak³

et al. 2017

J. Opt.

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We introduce and demonstrate concepts which utilize the non-line of sight fraction of light incident on a detector assembly in a visible-light communication (VLC) system. In addition to ambient light, realistic enclosures where VLC is implemented consist of a sizable fraction of scattered and reflected light. We present results of VLC systems with detectors responding to contributions from the light source scattered off a surface embedded with fluorescent and phosphorescent emitters besides the direct line of sight signal. Contribution from the emitters takes a form of discernible fluctuations in the detector signal. The implication of our results from noise analysis of these fluctuations indicates the possibility of utilizing smart coatings to further tailor VLC capabilities.

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