MATEC Web of Conferences
Volume 56, 20162016 8th International Conference on Computer and Automation Engineering (ICCAE 2016)
|Number of page(s)||5|
|Section||Modern Communication Technology and Applications|
|Published online||26 April 2016|
Regret of Multi-Channel Bandit Game in Cognitive Radio Networks
School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
The problem of how to evaluate the rate of convergence to Nash equilibrium solutions in the process of channel selection under incomplete information is studied. In this paper, the definition of regret is used to reflect the convergence rates of online algorithms. The process of selecting an idle channel for each secondary user is modeled as a multi-channel bandit game. The definition of the maximal averaged regret is given. Two existing online learning algorithms are used to obtain the Nash equilibrium for each SU. The maximal averaged regrets are used to evaluate the performances of online algorithms. When there is a pure strategy Nash equilibrium in the multi-channel bandit game, the maximal averaged regrets are finite. A cooperation mechanism is also needed in the process of calculating the maximal averaged regrets. Simulation results show the maximal averaged regrets are finite and the online algorithm with greater convergence rate has less maximal averaged regrets.
Key words: cognitive radio networks / adversarial bandit problem / congestion game / online learning / dynamic spectrum access
© Owned by the authors, published by EDP Sciences, 2016
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