Fig. 3: Working mechanism of the hybrid wireless communication system based on SLMPM. | Nature Communications

Fig. 3: Working mechanism of the hybrid wireless communication system based on SLMPM.

From: Solar-powered light-modulated microwave programmable metasurface for sustainable wireless communications

Fig. 3

a Design process of the modulated light required to generate the reflection microwave carrying 8QAM symbols. b I-Q constellation diagrams of QPSK, 8PSK, 8QAM and 16QAM schemes. c D-t0 scattering diagrams of QPSK, 8PSK, 8QAM and 16QAM schemes. d Block diagram of the light-to-microwave information transmission process. SAC signal amplifying circuit, EMS energy managing system, FC filtering circuit, LED light emitting diode, CSG carrier signal generator, SDR software-defined radio.

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