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所属单位：计算机科学与技术学院/人工智能学院/软件学院

发表刊物：MOBILE NETWORKS & APPLICATIONS

关键字：D2D communications Energy efficiency Resource allocation Fractional programming Duality

摘要：With the exponential growth of wireless users and their traffic demands, it is greatly increasing for the demand of the scarce spectrum resources in the communication networks. In order to enhance the performance of the wireless networks such as end-to-end delay, energy efficiency and throughput, the device-to-device (D2D) communication has been attracted more attention because the two devices in close proximity can communicate directly without traversing the central base station. However, most of users are very sensitive to the battery. Therefore, we aim to maximize the energy efficiency of wireless communication system in the context of underlaying device-to-device communication in this paper, We focus on the formulated power control and resource allocation problem which is non-convex in the fractional form. We reduce it from the power allocation of all users to the joint power and subchannel allocation of D2D users. Then, we tackle it by an iterative approximation algorithm leveraging to the properties of fractional programming. There are two studied cases for the subchannel allocation. One can be solved by the penalty function approach, and the other can be solved by the dual decomposition as well as sub-gradient method. Accordingly, we propose a dual-based algorithm in general. Numerical simulations demonstrate that the proposed algorithms outperform the conventional algorithm in terms of the energy efficiency.

ISSN号：1383-469X

是否译文：否

发表时间：2018-04-01

合写作者：Guan, Xiaoxiao,袁家斌,刘虎,Rodrigues, Joel J. P. C.

通讯作者：翟象平