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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Felegyhazi, M. Cagalj, M. Hubaux, J.-P. |
| Copyright Year | 2002 |
| Abstract | In this paper, we study the problem of efficient medium access control (MAC) among cognitive radio devices that are equipped with multiple radios and thus are capable of transmitting simultaneously at different frequencies (channels). We assume that radios contend on each channel using the carrier sense multiple access with collision avoidance (CSMA/CA) protocol. We study two MAC problems: (i) the allocation of the available channels among radios, and (ii) the optimal usage of each allocated channel by the radios occupying it. Both problems are studied in a game-theoretic setting, where devices aim to selfishly maximize their share of the available bandwidth. As for the first problem, we show that the ldquoprice of anarchyrdquo is close to 1, that is, Nash equilibria imply nearly system optimal allocations of the available channels. For the second problem, we design a game such that it admits a unique Nash equilibrium that is is both fair and Pareto-optimal. Furthermore, we propose simple mechanisms that enable selfish cognitive radio devices not only to coordinate efficiently on the available channels but also to optimally use every single allocated channel. |
| File Size | 475636 |
| File Format | |
| ISSN | 15361276 |
| Volume Number | 8 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-04-01 |
| 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 Frequency Access protocols Multiaccess communication Bandwidth Nash equilibrium Wireless communication Communications technology Communication system control Media Access Protocol Pareto-optimality Cognitive radio networks MAC CSMA/CA cooperation game theory |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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