Wide FOV receiving device for indoor visible light communication systems based on the MIMO principle

Visible light communication (VLC) is expected to be the next generation technology of indoor wireless broadband access. In order to achieve high data transmission rates, the multiple input multiple output (MIMO) VLC is proposed to break the bandwidth limitation due to the slow response time of LED devices, as MIMO-VLC offers the potential to transmit data in parallel between multiple sources and detectors. In addition, MIMO processing removes the need for precise alignment of transmitters and receivers, if the channel matrix is known and of full rank. Therefore, MIMO provides a solution to the design of wide field-of-view (FOV) receiving device for indoor VLC system, which is expensive if traditional optical components are used. This paper demonstrates the feasibility of such FOV receiving device with an integrated small size detector array, and discusses the device properties in terms of optimal channel capacity, complexity and robustness to misalignment. A physical model is proposed for system simulation based on the single lens optical transform. The aim of this effort is to design and realize the integrated receiving device of wide FOV for LED visible light communication systems