A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

Smart devices and their applications led to a rapid evolution of the Internet Things. As result, there is an emerging need on energizing those low-power devices, while at same time achieving information transfer. In this context, simultaneous wireless power transfer (SWIPT) considered as appealing technology, since it can wirelessly remotely such simultaneously with Motivated by this, we herein propose system model integrated SWIPT receiver, succeeding enhanced performance in terms decoding (ID) energy harvested (EH). Specifically, adopt single input multiple output topology, where receiver’s side examine two antenna architectures, one based direct-current (DC) combining other radio-frequency (RF) combining. For both schemes, consider receive antennas rectifiers, comparing performances. Furthermore, piece-wise linear EH model, which takes into account sensitivity saturation effects rectifiers. By using maximum likelihood-based soft decoding, non-coherent detection achieved. Finally, asymptotic analysis conducted, providing upper lower bounds for ID EH, respectively. Simulation results along theoretical analysis, validate EH.