Abstract
In this demonstration, we first propose an optimal analogue front end circuit without employing pre-equalization (series peaking) to increase the modulation bandwidth of phosphor-LED in visible light communication (VLC) transmission. And there is no blue filter and post-equalization in the client side. Here, only using optimal adjustment of resistance (R), inductance (L), and capacitance (C) in bias-tee to compensate the impedance matching of phosphor-LED, nearly 32 MHz modulation bandwidth can be accomplished. Therefore, utilizing orthogonal frequency division multiplexed modulation with bit-loading algorithm in VLC system, 185 Mbps data rate can be achieved under a transmission distance of 80 cm.
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References
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Acknowledgments
This paper was supported by Ministry of Science and Technology, Taiwan ROC, MOST-103-2218-E-035-011-MY3 and MOST-103-2221-E-009-030-MY3.
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Yeh, C.H., Chow, C.W., Liu, Y.L. et al. Investigation of no analogue-equalization and blue filter for 185 Mbps phosphor-LED wireless communication. Opt Quant Electron 47, 1991–1997 (2015). https://doi.org/10.1007/s11082-014-0070-5
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DOI: https://doi.org/10.1007/s11082-014-0070-5