We propose a self-powered signal processing system that can transfer a single byte of data without needing any external power supply. The proposed system uses a local extreme point reconstruction algorithm for reconstructing the waveform. In addition, we use Manchester coding in the proposed method for reducing the byte error rate. The experimental results show that the self-powered processor needs 3 mW generated from the solar panel to maintain 1  MSa  /  s and 8-bit sample depth when the visible light communication link distance is fixed as 30 cm. The maximum bit rate is 500  kbit  /  s and the corresponding byte error rate is 6  ×  ^{10  −  2}.