Patent ID: 9419713
Filing Date: 2016-08-16
CPC Classification: H04B,H04L

Claim Text:
1. A visible light communication method comprising steps of: sequentially receiving a plurality of binary logic streams, and performing a serial-to-parallel conversion on each said binary logic stream to obtain a plurality of binary signal sets corresponding to each said binary logic stream; respectively mapping said binary signal sets corresponding to each said binary logic stream to a plurality of sub-carrier symbols of a first orthogonal frequency-division multiplexing (OFDM) symbol in frequency domain, thereby obtaining a plurality of said first OFDM symbols, and said sub-carrier symbol is assigned to sub-carriers of each said first OFDM symbol; respectively transforming said first OFDM symbols into a plurality of second OFDM symbols in time domain; performing a parallel-to-serial conversion on said second OFDM symbols; respectively adding a plurality of cyclic prefixes in said second OFDM symbols according to transmission speeds of said second OFDM symbols to respectively obtain a plurality of fourth OFDM symbols; normalizing relative intensity of each said fourth OFDM symbol; multiplying said relative intensity of each said fourth OFDM symbol by a ratio to generate a plurality of third OFDM symbols; and performing a digital-to-analog conversion on said third OFDM symbols to respectively obtain a plurality of electrical analog signals, and respectively generating visible light signals according to said electrical analog signals.