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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yuhua Xu Anpalagan, A. Qihui Wu Liang Shen Zhan Gao Jinglong Wang |
| Copyright Year | 1998 |
| Abstract | Opportunistic spectrum access (OSA) has been regarded as the most promising approach to solve the paradox between spectrum scarcity and waste. Intelligent decision making is key to OSA and differentiates it from previous wireless technologies. In this article, a survey of decision-theoretic solutions for channel selection and access strategies for OSA system is presented. We analyze the challenges facing OSA systems globally, which mainly include interactions among multiple users, dynamic spectrum opportunity, tradeoff between sequential sensing cost and expected reward, and tradeoff between exploitation and exploration in the absence of prior statistical information. We provide comprehensive review and comparison of each kind of existing decision-theoretic solution, i.e., game models, Markovian decision process, optimal stopping problem and multi-armed bandit problem. We analyze their strengths and limitations and outline further research for both technical contents and methodologies. In particular, these solutions are critically analyzed in terms of information, cost and convergence speed, which are key concerns for practical implementation. Moreover, it is noted that each kind of existing decision-theoretic solution mainly addresses one aspect of the challenges, which implies that two or more kinds of decision-theoretic solutions should be incorporated to address more challenges simultaneously. |
| Starting Page | 1689 |
| Ending Page | 1713 |
| Page Count | 25 |
| File Size | 881563 |
| File Format | |
| ISSN | 1553877X |
| Volume Number | 15 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Cognitive radio Spread spectrum management Channel estimation Markov processes Decision making Opportunistic software systems development Game theory multi-armed bandit problem Opportunistic spectrum access cognitive radio distributed channel selection game theory Markovian decision process optimal stopping problem |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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