Fig. 3
From: Reconfigurable MIMO-based self-powered battery-less light communication system
Single PD configuration. a Picture of the large receiver plane with a 658 nm laser beam and its system diagram for the single PD reverse biasing to maximum bandwidth achievement and recombination of all other PDs. b Oscillogram of MCU interruption command for best SNR scan throughout all PDs with 4 and 5 ms switching time. c Power loading factor, spectral efficiency, SNR, and BER per subcarrier. d A picture of the small receiver plane with a 450 nm laser beam modulated using quadrature amplitude modulation and its experimental results shown in the constellation
