A power control algorithm for interference mitigation based on game theory in WBANs

• 1、School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876

Abstract：Wireless body area network(WBAN) is a body-centered communication network consisting of numerous network elements related to human beings. As a mobile self-organized network, it has information acquisition, data processing, wireless communication and other functions. Since human's sociability and mobility, there will be coexisting problem when users locate in an area. Coupled with the limited frequency resources, the inter-WBANs interference has become more challenging. As one kind of interference mitigation strategies, the power control method based on game theory can effectively fit the characteristics of WBANs such as random distribution and lack of coordination. It has got wide attention of the researchers. In this paper, we firstly establish dynamic interference model, then analyze a non-cooperative game power control algorithm, finally propose a time-weighted power control (TWP) algorithm. Simulation results show that compared with the traditional algorithm，TWP algorithm can meet the convergence faster, mitigate inter-WBANs interference more effectively and improve the reliability of network.

Keywords： Wireless body area network Game theory Power control Interference mitigation