Joint Uplink and Downlink Resource Allocation for NOMA-Enabled D2D Communications

被引：25
作者：
Kai, Caihong [1 ,2 ]
Wu, Yan [1 ,2 ]
Peng, Min [1 ,2 ]
Huang, Wei [1 ,2 ]
机构：
[1] Hefei Univ Technol, Sch Comp Sci & Informat Engn, Hefei 230601, Peoples R China
[2] Hefei Univ Technol, Intelligent Interconnected Syst Lab Anhui Prov, Hefei 230601, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Device-to-device communication; Downlink; Uplink; Interference; Resource management; NOMA; Copper; D2D; resource allocation; POWER ALLOCATION; ASSIGNMENT;
D O I：
10.1109/LWC.2021.3063169
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter investigates the joint uplink and downlink resource allocation problem, where the non-orthogonal multiple access (NOMA) technology is applied to enhance device-to-device (D2D) communications. In order to maximize the sum data rate of NOMA-enabled D2D groups while guaranteeing the minimum data rate requirements of both cellular users (CUs) and D2D groups, we first design a subcarrier assignment algorithm to assign the downlink and uplink subcarriers for D2D groups, and then transform the problem into a convex optimization to obtain the optimal power allocation. Simulation results demonstrate the remarkable improvement in terms of data rate of D2D groups by using our algorithms.
引用
收藏
页码：1247 / 1251
页数：5
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