Diffusion of Cooperative Behavior in Decentralized Cognitive Radio Networks with Selfish Spectrum Sensors
Amitav Mukherjee

TL;DR
This paper models how cooperative spectrum sensing behavior spreads among selfish users in decentralized cognitive radio networks, analyzing factors influencing equilibrium states and cooperation diffusion.
Contribution
It introduces a game-theoretic model for cooperation diffusion, characterizing Bayesian Nash Equilibria in a decentralized cognitive radio context with various network factors.
Findings
Network topology significantly affects cooperation diffusion.
Channel fading and multiple antennas influence equilibrium outcomes.
Simulation results highlight conditions favoring cooperation spread.
Abstract
This work investigates the diffusion of cooperative behavior over time in a decentralized cognitive radio network with selfish spectrum-sensing users. The users can individually choose whether or not to participate in cooperative spectrum sensing, in order to maximize their individual payoff defined in terms of the sensing false-alarm rate and transmit energy expenditure. The system is modeled as a partially connected network with a statistical distribution of the degree of the users, who play their myopic best responses to the actions of their neighbors at each iteration. Based on this model, we investigate the existence and characterization of Bayesian Nash Equilibria for the diffusion game. The impacts of network topology, channel fading statistics, sensing protocol, and multiple antennas on the outcome of the diffusion process are analyzed next. Simulation results that demonstrate…
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