Cooperative Spectrum Sharing Scheme for Overlay D2D-enable Cellular Network

[摘要] This paper proposes a cooperative spectrum sharing scheme for overlay Device-to-Device (D2D) enable cellular network. Based on the proposed scheme, the cell edge user (EU) intends to share its spectrum resource with a D2D transmission pair by overlay approach. The D2D transmission pair has to forward data for the EU with the aid of Non-Orthogonal Multiple Access (NOMA) for accessing the licensed spectrum to transmit its own data and for improving the spectrum efficiency. Based on the NOMA technology, this paper develops a power allocation algorithm for the D2D in order to maximize its own utility. The simulation results demonstrate that the proposed scheme is capable of providing considerable rate improvements for the EU.

[发布机构] School of Electric and Information Engineering, Nanjing University of Information Science and Technology, 219 Ninliu Road, Nanjing, China^1

[效力级别] 无线电电子学 [学科分类] 计算机科学（综合）

[关键词] Cell edges;Cellular network;Cooperative spectrum sharing;Device to device (D2D);Non orthogonal multiple accesses (NOMA);Power allocation algorithms;Spectrum efficiency