Device and method for changing lighting angle of optical transmitter in visible light communication systems

摘要

emitting angle changing apparatus and method of the optical transmitter is provided. Angle variation of the disclosed light emitting device received from the optical transmitter signal-to-interference ratio (Signal to Noise Ratio, or less SNR) information of the reception strength and the plurality of optical transmitters for the SNR information transmitted from the light receiver is measured in each of a plurality of optical transmitters receiver that; Determination unit configured to determine whether the SNR information is a preset threshold value or more; And the SNR information may include a control unit for changing the emission angle of the at least one optical transmitter of the plurality of optical transmitter using the received intensity is less than the threshold value. According to the invention, possible to change the emission angle of the optical transmitter, and can improve the performance of the visible-light wireless communication system through the change in the emission angle of the light transmitter. ;