Design and performance evaluation of VLC indoor positioning system using optical orthogonal codes

In this paper, a VLC indoor positioning system utilizing optical orthogonal codes (OOCs) is proposed. The use of OOC is to distinguish different transmitted signals at the receiver, the trilateration method then calculate the position of receiver based on these distinguished signals. To expand the scale of system and use efficiently OOC resource, a strategy of reusing/combining codeword is proposed. We also create a combination of simulation and mathematical modeling to investigate the performance of proposed system. Numerical results confirm that the proposed system can achieve a good positioning accuracy level in average.