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arXiv 1702.05977cs.ITmath.IT
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全双工蜂窝网络的频谱效率和公平性

On the Spectral Efficiency and Fairness in Full-Duplex Cellular Networks

Jose Mairton B. da Silva, Gabor Fodor, Carlo Fischione

摘要:

为了提高无线网络的频谱效率而不需要用户设备的全双工能力,一种潜在的解决方案是最近提出的三节点全双工模式。为了实现这种潜力,采用三节点全双工传输的网络必须处理自干扰和用户间干扰,这可以通过频率信道和功率分配技术来管理。鉴于以前的作品调查频谱效率或公平的机制,平衡这两个指标的用户之间的计划,本文研究。该均衡方案基于一种新的多目标优化问题的求解方法,以最大化每个用户的频谱效率和用户间的最小频谱效率的加权和。该问题的混合整数非线性性质由拉格朗日对偶处理。基于所提出的解决方案的方法,开发了一种低复杂度的集中式算法,该算法依赖于可以有利地在基站处实现的大规模衰落测量。仿真结果表明,该算法在不对频谱效率进行加权的情况下,提高了频谱效率和用户间的公平性。一个重要的结论是,通过资源分配和功率控制来管理用户到用户的干扰对于确保全双工网络的频谱高效和公平操作是至关重要的。

英文摘要:

To increase the spectral efficiency of wireless networks without requiring full-duplex capability of user devices, a potential solution is the recently proposed three-node full-duplex mode. To realize this potential, networks employing three-node full-duplex transmissions must deal with self-interference and user-to-user interference, which can be managed by frequency channel and power allocation techniques. Whereas previous works investigated either spectral efficient or fair mechanisms, a scheme that balances these two metrics among users is investigated in this paper. This balancing scheme is based on a new solution method of the multi-objective optimization problem to maximize the weighted sum of the per-user spectral efficiency and the minimum spectral efficiency among users. The mixed integer non-linear nature of this problem is dealt by Lagrangian duality. Based on the proposed solution approach, a low-complexity centralized algorithm is developed, which relies on large scale fading measurements that can be advantageously implemented at the base station. Numerical results indicate that the proposed algorithm increases the spectral efficiency and fairness among users without the need of weighting the spectral efficiency. An important conclusion is that managing user-to-user interference by resource assignment and power control is crucial for ensuring spectral efficient and fair operation of full-duplex networks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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