Joint Subcarrier and Power Allocation in D2D Communications Underlaying Cellular Networks
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DOI码：10.1109/WCNC45663.2020.9120602
所属单位：School of ComputerScience and Information Engineering, Hefei University of Technology
发表刊物：2020 IEEE Wireless Communications and Networking Conference
项目来源：National Natural Science Foundation of China under Grants 61971176, and 61901156, Fundamental Resea
关键字：D2D communications, physical layer security, resource management
摘要：For the high density of users and accompanying network service requirements in the cellular system, Device-to-Device (D2D) communication is a promising technology to cope with the increasing wireless traffic demands by reusing spectrum resources. In practice, the wireless signal is easy to be eavesdropped in D2D communications underlaying cellular networks, hence, ensuring a secure communication for cellular user equipments (CUEs) is an urgent and meaningful problem. In this paper, we propose a joint subcarrier and power allocation scheme for maximizing the sum data rate of D2D pairs, meanwhile protecting the CUEs against eavesdropping. Specifically, in the proposed scheme, we first quantify the security performance with the secrecy data rate, and obtain the closed-form expression for the optimal power allocation of CUEs and D2D pairs by tightening the quality of service (QoS) and secrecy rate requirement constraints of CUEs. Based on the obtained power allocation solution, by searching the optimal mapping relationship between CUEs and D2D pairs, we develop a subcarrier assignment strategy with the Hungarian algorithm to solve it, which can further enhance the sum data rate of D2D pairs. Simulation results demonstrate that the proposed scheme can significantly yield better performance than other schemes.
合写作者：Yan Wu,Xinyue Hu,Wei Huang
第一作者：Caihong Kai
论文类型：会议
学科门类：工学
文献类型：C
ISSN号：1558-2612
是否译文：否
发表时间：2020-05-25
收录刊物：EI