Wireless information and power transfer on cooperative multi-path relay channels

A cooperative multi-path relay channel (MPRC) is considered with multiple off-grid intermediate relay terminals. In order to collect sufficient energy for helping forward the source messages, each relay dynamically selects a power-splitting factor for signal detection and energy harvesting (EH) respectively based on the local signal observation. Depending on the channel state information (CSI) available at the relays, opportunistic EH and relay selection schemes are proposed, through which a single best relay is selected from the relays that successfully decode the source message meanwhile collecting sufficient energy. Outage performance of the wireless powered MPRC is analyzed and simulated. Simulation results demonstrate that with more CSI available, a better outage performance can be achieved while harvesting more energy.

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