Game Theory on Power Control in Wireless Sensor Networks Based on Successive Interference Cancellation

In infrastructure-less wireless sensor networks, with the requirements of saving energy and improving the network throughput, this paper proposes a non-cooperative game theory power control strategy based on CDMA wireless sensor networks. Based on (successive interference cancellation, SIC) of multi-packet reception theory in sink nodes, transmission power control scheme for sensor nodes is proposed. Specifically, this paper combines SIC algorithm and non-cooperative game theory, it discusses the Nash Equilibrium for the power control strategy, and it also proposes that as long as transmission power of sensor nodes meet transmission power threshold, it can satisfy non-cooperative game theory power control. Compared with other power control strategies in WSN, simulation results prove that the non-cooperative game theory power control scheme is effective; it also saves sensor nodes' energy, obtains good performance for the whole network and greatly improves the network lifetime.