An experimental study of power division multiplexing in visible light communication.

In this paper, the performance of a one-channel PDM-VLC system with different signal power ratios, sample rates and transmission distances are investigated, and for three users' transmission, 150 Mbit/s rate and 1.2 m distance can be realized. Furthermore, a two-channel PDM-VLC system with distance of 1 m is established and analyzed for the multi-user application. The total transmission rate can reach 150 Mbit/s for three users and 250 Mbit/s for two users under the influence of the channel interference. • One-channel and two-channel PDM-VLC systems are presented for three users to simultaneously transmit their own signal. • A 150 Mbit/s transmission for three users at a distance of 1.2 m can be realized in one-channel PDM-VLC system. • Two-user 250 Mbit/s and three-user 150 Mbit/s transmissions at 1 m are realized in two-channel PDM-VLC system. • The impact of signal power ratio, sample rate, and transmission distance on PDM-VLC system performance is demonstrated. • It is revealed that PDM can be successful used for multiple user transmission in VLC system with high spectrum efficiency. [ABSTRACT FROM AUTHOR]