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• W2537223225 abstract "In this paper, we aim to maximize the energy efficiency of cellular wireless networks. Specifically, we address the power allocation problem in multi-cell multi-carrier systems. Considering realistic base station power consumption models, we formulate a network-wide energy efficiency maximization problem. Using tools from fractional programming, we cast this problem in the framework of bi-criterion optimization where rate maximization and power minimization are weighted accordingly. Interference pricing mechanism is applied to reduce the inter-cell interference and to achieve a higher network performance. We decompose the main problem into subproblems via dual decomposition. These subproblems are independently solved per sector using limited information exchange between base stations. We first derive our expressions and present algorithms for the single-tier networks. Then, we extend our analysis to two-tier networks where picocell base stations are deployed to improve the network performance and reduce the link distances. Lastly, we extend our framework and include the quality-of-service constraints. We obtain closed-form expressions for the power level updates which are determined by the multi-level water-filling algorithm, or, as it is sometimes called as, the modified water-filling algorithm. Based on our simulation results, we demonstrate that the proposed algorithms can outperform the benchmark approaches in terms of energy efficiency by a factor of 2.7." @default.
• W2537223225 created "2016-10-28" @default.
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• W2537223225 date "2016-01-01" @default.
• W2537223225 modified "2023-10-18" @default.
• W2537223225 title "New algorithms for maximizing cellular wireless network energy efficiency" @default.
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• W2537223225 doi "https://doi.org/10.1109/ita.2016.7888190" @default.
• W2537223225 hasPublicationYear "2016" @default.
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