ABSTRACT
The imaging sensor can also be combined with light-emitting diode's to achieve the indoor localization function. In the 3D indoor optical wireless localization system, instead of using the simple non-imaging receiver, the more advanced single-channel imaging receiver needs to be used to provide the signal angle-of-arrival information. The optical wireless signal transmission from the user to the ceiling mounted interface, which is normally referred as the uplink, has already been developed using the similar principle as the downlink, and more details about the uplink can be found in reference. In the “Search and Scan”-based indoor optical wireless localization principle, the localization accuracy equals to the cell size. Due to the large license-free bandwidth advantage, the optical wireless technology is an attractive option to provide ultra-high-speed wireless communications in indoor environments.
