2d beam selection procedure in an optical wireless communication system

Abstract

An optical wireless communication device () comprising: a two-dimensional array of emitters () each emitter arranged to emit an optical signal and having an individual coverage area; wherein the two-dimensional array of emitters () is arranged to create a combined coverage area larger than the individual coverage area, with each individual coverage area evenly distributed within the combined coverage area; a receiver () configured to receive a feedback from a remote device in the combined coverage area; and a controller () configured to assign an address to each emitter out of the two-dimensional array of emitters, each address comprising a pair of codes representing coordinates on an X-axis and a Y-axis, respectively, according to a Cartesian coordinate system, to uniquely identify each emitter in the Cartesian coordinate system; wherein each emitter out of the two-dimensional array of emitters () is configured to send a beacon signal comprising its address for assisting the remote device to provide the feedback, with the plurality of emitters configured to send beacon signals according a Code-Division Multiple Access; and the controller () is configured to select an emitter out of the two-dimensional array of emitters () for establishing an optical wireless data link with the remote device according to the feedback received from the remote device.