Price-mechanism based method of bandwidth and energy allocation in wireless EH cooperative communication systems

A resource allocation method for relay nodes based on price mechanism is proposed for data and energy allocation in wireless Energy harvesting (EH) cooperative networks. The bandwidth and energy harvested by relay nodes are not only used for their own data transmission, but also used to forward the data of source nodes and transmit energy to destination nodes by means of Simultaneous Wireless Information and Power Transfer (SWIPT). To maximize the utility of resources. Firstly, the utility function expression of relay nodes is derived based on the price mechanism, and then the optimization problem of maximum utility is established. The bandwidth splitting factor used by relay nodes for forwarding information and the power splitting factor of SWIPT-PS mode are solved using particle swarm optimization (PSO) algorithm, and the effect of price on the bandwidth and energy allocation of relay nodes is analyzed. The simulation results show that the bandwidth and energy allocation method of relay nodes based on the price mechanism proposed in this paper has good performance.