Optical multi-cell communication system with extended coverage

A system for wireless optical communication, comprising:

• a plurality of luminaires of an illumination system;
• the plurality of luminaires being arranged for emitting light in at least three channels in the visible and/or invisible range and comprising respective modem units for modulating emitted light with a communication signal to be transmitted and for demodulating detected light to receive a communication signal;
• wherein the plurality of luminaires are arranged in a regular Bravais pattern based on a convex quadrilateral unit cell;
• wherein a respective one of the at least three channels is allocated to each communication coverage area of the plurality of luminaires;
• wherein a predetermined reuse pattern of the allocated channels is applied to ensure that different channels are allocated to neighboring coverage areas of the plurality of luminaires;
• and
• wherein the predetermined reuse pattern is configured so that a first channel and a second channel are distributed over the Bravais pattern and a third channel is used to cover dead spot areas where the coverage areas of the first and second channels contact each other.