Competitive Spectrum Management with Incomplete Information

An important issue in wireless communication is the interaction between selfish and independent wireless communication systems in the same frequency band. Due to the selfish nature of each system, this interaction is well modeled as a strategic game where each player (system) behaves to maximize its own utility. This paper studies an interference interaction (game) where each system (player) has incomplete information about the other player's channel conditions. Using partial information, players choose between frequency division multiplexing (FDM) and full spread (FS) of their transmitted power. An important notion in game theory is the Nash equilibrium (NE) which represents a steady point in the game; that is, each player can only lose by unilaterally deviating from it. A trivial Nash equilibrium point in this game is where players mutually choose FS and interfere with each other. This point may lead to poor spectrum utilization from a global network point of view and even for ...

• Type: Journal
• Year: 2010
• Where: CORR
• Authors: Yair Noam, Amir Leshem, Hagit Messer
• Keywords: CORR 2010, Education, Equilibrium Point, Nash Equilibrium, Wireless Communication