Opportunistic Spectrum Access in Unknown Dynamic Environment: A Game-Theoretic Stochastic Learning Solution
Opportunistic Spectrum Access in Unknown Dynamic Environment: A Game-Theoretic Stochastic Learning Solution
复制标题
未知动态环境中的机会频谱访问:博弈论随机学习解决方案
DOI:
10.1109/twc.2012.020812.110025
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发表时间:
2012-02
影响因子:
10.4
通讯作者:
Qihui Wu
中科院分区:
文献类型:
--
作者:
Yuhua Xu;Jinlong Wang;Qihui Wu
We investigate the problem of distributed channel selection using a game-theoretic stochastic learning solution in an opportunistic spectrum access (OSA) system where the channel availability statistics and the number of the secondary users are apriori unknown. We formulate the channel selection problem as a game which is proved to be an exact potential game. However, due to the lack of information about other users and the restriction that the spectrum is time-varying with unknown availability statistics, the task of achieving Nash equilibrium (NE) points of the game is challenging. Firstly, we propose a genie-aided algorithm to achieve the NE points under the assumption of perfect environment knowledge. Based on this, we investigate the achievable performance of the game in terms of system throughput and fairness. Then, we propose a stochastic learning automata (SLA) based channel selection algorithm, with which the secondary users learn from their individual action-reward history and adjust their behaviors towards a NE point. The proposed learning algorithm neither requires information exchange, nor needs prior information about the channel availability statistics and the number of secondary users. Simulation results show that the SLA based learning algorithm achieves high system throughput with good fairness.
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DOI:
--
发表时间:
1998-09
期刊:
ArXiv
影响因子:
--
作者:
R. Jain;D. Chiu;W. Hawe
通讯作者:
R. Jain;D. Chiu;W. Hawe
影响因子:
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影响因子:
16.4
作者:
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DOI:
10.1109/98.788210
发表时间:
1999-08-01
期刊:
IEEE PERSONAL COMMUNICATIONS
影响因子:
--
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通讯作者:
Maguire, GQ
DOI:
10.1109/tpds.2007.70814
发表时间:
2008-11
影响因子:
5.3
作者:
Tarun Joshi;Disha Ahuja;Damanjit Singh;D. Agrawal
通讯作者:
Tarun Joshi;Disha Ahuja;Damanjit Singh;D. Agrawal