MIMO Cognitive Radio: A Game Theoretical Approach

The concept of cognitive radio (CR) has recently received great attention from the research community as a promising paradigm to achieve efficient use of the frequency resource by allowing the coexistence of licensed (primary) and unlicensed (secondary) users in the same bandwidth. In this paper we...

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Veröffentlicht in:IEEE transactions on signal processing Jg. 58; H. 2; S. 761 - 780
Hauptverfasser: Scutari, G., Palomar, D.P.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York, NY IEEE 01.02.2010
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Algorithms
Applied sciences
Asymptotic properties
Bandwidth
Chromium
Cognitive radio
Communities
Convergence
Exact sciences and technology
Frequency
Game theory
Games
Information analysis
Information rates
Information, signal and communications theory
Interference constraints
MIMO
MIMO Gaussian interference channel
Miscellaneous
Nash equilibrium
Radio
Robustness
Signal processing
Studies
Telecommunications and information theory
totally asynchronous distributed algorithms
Transceivers
MIMO system
totally asynchronous distributed algorithms
Gaussian channel
Information rate
Nash equilibrium
Updating
Covariance matrix
MIMO Gaussian interference channel
Cognitive radio
Game theory
Information transmission
Implementation
Transceiver
Asymptotic stability
Decentralized system
Distributed algorithm
Convergence rate
Signal processing
Robustness
Software radio
interference constraints
ISSN:1053-587X, 1941-0476
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Zusammenfassung:The concept of cognitive radio (CR) has recently received great attention from the research community as a promising paradigm to achieve efficient use of the frequency resource by allowing the coexistence of licensed (primary) and unlicensed (secondary) users in the same bandwidth. In this paper we propose and analyze a totally decentralized approach, based on game theory, to design cognitive MIMO transceivers, who compete with each other to maximize their information rate. The formulation incorporates constraints on the transmit power as well as null and/or soft shaping constraints on the transmit covariance matrix, so that the interference generated by secondary users be confined within the temperature-interference limit required by the primary users. We provide a unified set of conditions that guarantee the uniqueness and global asymptotic stability of the Nash equilibrium of all the proposed games through totally distributed and asynchronous algorithms. Interestingly, the proposed algorithms overcome the main drawback of classical waterfilling based algorithms-the violation of the temperature-interference limit-and they have the desired features required for CR applications, such as low-complexity, distributed implementation, robustness against missing or outdated updates of the users, and fast convergence behavior.
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ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2009.2032039