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Interference-Tolerant Spatio-Temporal Dynamic Spectrum Allocation

Interference-Tolerant Spatio-Temporal Dynamic Spectrum Allocation,10.1109/DYSPAN.2007.59,L. Kovacs,A. Vidacs

Interference-Tolerant Spatio-Temporal Dynamic Spectrum Allocation   (Citations: 4)
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The radio spectrum is a scarce and thus expensive resource. The exclusive licences of today's practice easily solve the problem of interference, but is clearly inadequate for providing optimal spectrum efficiency for dynamically varying demands. We propose a new model for dynamic spectrum allocation (DSA) to increase spectral efficiency, that handles interference issues in a flexible way. The level of interference between different radio technologies and between geographic regions is captured by the introduced radio technology coupling and geometric coupling parameters. The tolerance for interference from the radio network providers' point of view is also taken into account. The rules for a feasible spectrum allocation are given, and the optimal allocation that maximizes the achievable gain is calculated using heuristics. Simulation results show the effectiveness of the proposed DSA model for different scenarios.
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    • ...Together with cognitive radio, available spectrum can be sensed as idle spectrum (spectrum holes) and problems described can be overcome [3, 4, 5]. Power detection [3] on the licensed channels is the most directly and widely used method to identify whether frequency band is occupied by a licensed user (primary user) or not...
    • ...In addition, decision-making of distributed DSA [4] relies on an unlicensed user and local information, and it can be implemented in both infrastructure-based and infrastructureless cognitive radio networks [6], therefore, an unlicensed user has to possess more powerful computing capability to gather, exchange, process information, while centralized DSA [5] have to employ a centralized controller and is liable to get a network-wide optimal ...

    Xuchen Liuet al. A Novel Dynamic Spectrum Access Strategy Applied to Cognitive Radio Ne...

    • ...Spectrum sharing schemes under a centralized spectrum management entity have been explored in [3], [4], [7], [11]...

    Zafer Beyaztaset al. Optimum Power Allocation in a Hierarchical Spectrum Sharing Scheme

    • ...In a previous paper [19] we defined a model for Dynamic Spectrum Allocation that handles interference issues in a flexible way...
    • ...The outlined solution is a one-shot multibid auction method, based on our spatio-temporal DSA framework [19] that takes into account interference issues in a flexible way...

    László Kovácset al. One-Shot Multi-Bid Auction and Pricing in Dynamic Spectrum Allocation ...

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