Simultaneous wireless information and power transfer (SWIPT) Experimental validation Frequency-domain simultaneous wireless information and power transfer (FD-SWIPT) High power amplifier (HPA) Intelligent reflecting surface (IRS) Inter-system coordination protocol Joint active Minimum shift keying (MSK) modulation Multitone energy signal Orthogonal frequency division multiplexing (OFDM) Peak-to-average-power-ratio (PAPR) Predistortion SWIPT Underlay spectrum sharing Waveform design experimental validation multitone energy signal optimization passive beamforming optimization waveform design