عنوان
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A Game-Theoretic Approach to Spectrum Sharing in Multihop OFDMA Networks
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نوع پژوهش
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مقاله ارائه شده کنفرانسی
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کلیدواژهها
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Game theory, multicarrier, mutihop, OFDMA, optimization.
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چکیده
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We address the problem of subcarrier sharing with discrete rate allocation in the downlink of multihop OFDMA networks. The co-channel interference makes the problem computationally intractable. We therefore model the problem as a non-cooperative game among the transmitting nodes with smaller scale problems. Each problem is solved using dual decomposition. Moreover, to mitigate the degradation effect of co-channel interference in this game, we additionally propose a price-based game. This game charges the transmitting nodes for their power on subcarriers. Numerical results demonstrate that price-based game outperforms the non-cooperative game as a result of distributed interference avoidance. In addition, these games with subcarrier sharing achieve higher sum-rate compared with resource allocation schemes with no subcarrier sharing.
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پژوهشگران
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حسن طاهری (نفر دوم)، محمد فتحی (نفر اول)
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