Interference mitigation based on multiple SINR thresholds in 60GHz wireless networks

Abstract

To investigate spatial interference statistics for multi-Gigabit indoor networks operating in the unlicensed 60 GHz "millimeter (mm) wave" band, power control was studied with a non-cooperative game-theoretic approach. Considering different data rates corresponding to different signal-to- interference plus noise ratio (SINR) thresholds in the standard of 60 GHz wireless networks, the Piecewise Utility-based Transmit Power Control (PUTPC) was proposed to improve the system performance. The proposed method is related to the SINR threshold and the obtained SINR. A detailed analysis of the existence and uniqueness of Nash equilibrium for the above non-cooperative game is presented. Numerical results demonstrate that the new algorithm can efficiently improve the system capacity and can lower average outage percentage effectively with saved power. © 2012 Springer-Verlag.