In this paper, we propose a novel indoor multi-user (MU) multiple-input multiple-output (MIMO) optical orthogonal frequency division multiplexing (OOFDM) aided visible light communication (VLC) system. By using light-emitting diodes (LEDs) for both illumination and data transmission, the system employs imaging receiver (ImR) to reduce the MIMO channel correlation. Moreover, a new photodetector selection (PDS) technique is invoked, which helps to further mitigate the channel correlations across the multiple PDs of the same user equipment (UE) or those between the UEs. Through both analytical study and numerical simulations, the bit error rate (BER) performances are evaluated. It is shown that our proposed design can enhance the VLC system's performance, especially when UEs are extremely close.
['Kunyi Cai', 'Ming Jiang']
Multi-User MIMO-OOFDM Imaging VLC System with PD Selection