Design of Multi-Spectral Coded VPPM for optical wireless LED communications


In this paper, we propose a new modulation scheme called Multi-Spectral Coded Variable Pulse Position Modulation (MSC-VPPM) for optical wireless LED communication system. Signals are transmitted using Multi-Spectral Keying (MSK) scheme in spectral domain and Multi-Coded VPPM (MC-VPPM) scheme in time domain. By changing the power ratio of multi-spectral LEDs… (More)


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