Optical communication apparatus, optical communication system, and optical communication method

An optical communication system having an transmission apparatus and an optical communication apparatus, wherein

• the transmission apparatus transmits a light signal including predetermined information, which is a light source group ID that identifies a light source group formed of a plurality of light signals transmitted by the transmission apparatus, a light source group position that indicates a position of the light source group, and a light source element position that indicates a position of a light source element forming the light source group and is hierarchized, and wherein
• the optical communication apparatus comprises:
• a reception unit that receives, from the transmission apparatus which transmits the light signal including the predetermined information, the transmitted light signal;
• a multipath removal unit that recognizes, when detecting a plurality of images having the same optical information in the received light signal, the light signal due to a reflection wave based on at least one of a luminance of the light signal, a size of an image corresponding to the light signal when receiving at the reception unit, and a propagation distance of the light signal and removes the light signal due to the reflection wave;
• and
• an control unit that acquires, from the light signal received by the reception unit, information based on the light signal obtained by removing the light signal due to the reflection wave by the multipath removal unit.

An optical communication method, comprising:

• (a) by way of a reception unit, receiving, from a transmission apparatus which transmits a light signal including predetermined information, the transmitted light signal;
• (b) by way of a multipath removal unit, recognizing, when detecting a plurality of images having the same optical information in the light signal received in (a), the light signal due to a reflection wave based on at least one of a luminance of the light signal, a size of an image corresponding to the optical signal when receiving at the reception unit, and a propagation distance of the light signal and removing the light signal due to the reflection wave;
• and
• (c) by way of an control unit, acquiring, from the light signal received in (a), information based on the light signal obtained by removing the light signal due to the reflection wave by the multipath removal unit.