Relaying protocol design and optimization for energy harvesting relaying in SWIPT networks

Abstract

In this article, a relaying network with simultaneous wireless information and power transfer (SWIPT) is considered, where the relaying nodes are energy‐constrained. The relaying nodes rely on energy harvesting (EH) technique for energy supply and they use different directive transmitters for information transmission and energy transfer, respectively, to enhance the SWIPT relaying performance. A novel discrete‐time‐switch and power‐split (DTS‐PS) based energy harvesting mixture transmission (EH‐MT) protocol for each EH decode and forwarding (DF) relaying node is proposed. The expressions for the average information rate and the energy transfer power are derived analytically and verified by simulations. An optimization function is formulated, and the optimal parameters are obtained analytically and verified by simulation.

Double discrete‐time‐switch protocol for SWIPT at the energy harvesting relays: Protocol design and optimization

“…100,000 time blocks are used for obtaining the simulation value of the average information rate and the transferred power. The parameters are set similar to those in previous works such as references [1][2][3][4][5][6] and [22], which is proved to be practical. Further, to compare with the performance in the work of [22], the main parameters are set as the same as those in ref.…”

“…The parameters are set similar to those in previous works such as references [1][2][3][4][5][6] and [22], which is proved to be practical. Further, to compare with the performance in the work of [22], the main parameters are set as the same as those in ref. [22].…”

“…Further, to compare with the performance in the work of [22], the main parameters are set as the same as those in ref. [22]. The parameter settings are given in Table 2.…”

“…Comparing with the DTS-PS protocol in ref. [22], there are some advantages. The power transfer and the information forwarding are proceeded in different time blocks instead of in the same time block.…”

Energy enhancement and efficient route selection mechanism using H-SWIPT for multi-hop IoT networks

“…In Ref. [25], Ma et al proposed a new SWIPT technique to improve the energy harvesting capacity of sensor nodes. They proved that the algorithm based on the time switching protocol is performed better than the algorithm based on the power switching protocol when the base station transmission power has been limited to a fixed quantity.…”