Fig. 8From: Green communication for MIMO SWIPT-powered 5G Internet of Things with full-duplex relay base on secure transmission and energy collection constraintsThe harvested energy achieved by two optimization schemes. The blue histograms represent the harvested energy achieved by MHED and SPSD, when energy collection constraints \( {P}_1^{EC}=20\kern0.3em \mathrm{dBm} \). The orange histogram represents the harvested energy achieved by MHED and SPSD, when energy collection constraints \( {P}_2^{EC}=30\kern0.3em \mathrm{dBm} \)Back to article page