Optical Camera Communications Based on Compressed Sensing

摘要

According to an embodiment of the present invention, there is provided an optical camera communication system, comprising: a transmitter for transmitting a visible light signal having a first rate at an optical rate; And a receiving device for receiving the visible light signal at a second rate lower than the first rate, wherein the transmitting device modulates the source data using an M-ary pulse position modulation (PPM) method Signal modulation module; A PN code generation module for generating a PN code (Pseudo Noise code) for randomly projecting the modulated signal through the signal modulation module, a PN code generation module for generating at least one LED (Light Emitting Diode) An LED driving module for generating a driving signal for controlling an On or Off state; And an LED module for transmitting a visible light signal through the at least one LED according to the driving signal, wherein the receiving device comprises: a camera module having the second rate at a frame rate; A region of interest detection module that detects a transmission region of the visible light signal within a frame received through the camera module; And a signal detection module for detecting the source data in a visible light signal transmitted through the detected region of interest.;