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Simultaneous lightwave information and power transfer (SLIPT) is a potentialway to meet the demands of sustainable power supply and high-rate data transferin next-generation networks. Although resonant beam-based SLIPT (RB-SLIPT) canrealize high-power energy transfer, high-rate data transfer, human safety, andself-alignment simultaneously, mobile transmission channel (MTC) analysis undernon-line-of-sight (NLOS) propagation has not been investigated. In this paper,we propose analytical models and simulation tools for reflector-assisted NLOStransmission of RB-SLIPT, where transmission loss and accurate beam fieldprofile of NLOS MTC can be obtained with a receiver at arbitrary positions andattitude angles. We establish analytical models relying on full diffractiontheory for beam propagation between tilted or off-axis planes. Then, we providethree numerical methods (i.e., NUFFT-based, cubic interpolation-based, andlinear interpolation-based methods) in simulations. Moreover, to deal with thecontradiction between limited computing memory and high sampling requirementsfor long-range transmission analysis, we propose a multi-hop sliding windowapproach, which can reduce the sampling number by a factor of thousands.Finally, numerical results demonstrate that RB-SLIPT can achieve $4$W chargingpower and $12$bit/s/Hz data rate over $2$m distance in NLOS scenarios.

NLOS Transmission Analysis for Mobile SLIPT Using Resonant Beam