Visible light wireless communication method and device for multi-verification filtering

The invention relates to a multi-verification filtering visible light wireless communication method and device. The method comprises the following steps: transmitting an optical signal; light splitting is carried out on the light signals, a light signal A of a light is left in a first channel, a light signal B of the light is left in a second channel, and light signals C of the light a and the light b are left in a third channel; light splitting is carried out on the first channel and the second channel to obtain optical signals A1, A2, B1 and B2; the optical signals A1, A2, B1, B2 and C are converted into electric signals; common-mode processing is carried out on the electric signals A1 and A2 and the electric signals B1 and B2 to eliminate white noise, and electric signals A3 and B3 are output; light a and light b in the electric signal C are stripped out through fast Fourier transform, and electric signals A4 and B4 are obtained; and the electric signals A3, B3, A4 and B4 are verified. The device is not in