مشخصات پژوهش

عنوان	A Game-Theoretic Approach to Spectrum Sharing in Multihop OFDMA Networks
نوع پژوهش	مقاله ارائه شده کنفرانسی
کلیدواژه‌ها	Game theory, multicarrier, mutihop, OFDMA, optimization.
چکیده	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.
پژوهشگران	حسن طاهری (نفر دوم)، محمد فتحی (نفر اول)