ShanghaiTech University Knowledge Management System
Dynamic User Pairing and Power Allocation for Throughput Maximization in NOMA Systems | |
2019 | |
会议录名称 | 2019 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS) |
发表状态 | 已发表 |
DOI | 10.1109/ICCW.2019.8756777 |
摘要 | Non-orthogonal multiple access (NOMA) can enhance the spectral efficiency of the fifth generation (5G) wireless networks. System level optimization on power allocation and user pairing for improving the throughput of NOMA systems has been well studied. However, most of the existing works have not taken into account dynamic traffic arrival and possible packet transmission failure. In this paper, we consider downlink transmission of a power-domain NOMA system with dynamic packet arrival, where the base station supports both NOMA and orthogonal multiple access (OMA). We propose a packet level scheduling scheme for the base station to decide using either NOMA or OMA, and to determine user pairing and power allocation, with an objective to maximize the aggregate throughput. To tackle the challenges introduced by dynamic packet arrivals and possible transmission failure, we first derive the probability of successful packet transmission with limited feedback on channel state information (CSI). We then formulate a throughput maximization problem as a stochastic network optimization problem taking into account the backlog stabilities. We decompose the problem into two subproblems for NOMA and OMA, respectively, and obtain the optimal user pairing and power allocation. Packet-level simulations show that the proposed scheme obtains a higher throughput compared with the distance based user pairing scheme and the CSI-based power allocation scheme. |
会议地点 | Shanghai, China |
收录类别 | EI ; CPCI-S ; CPCI |
语种 | 英语 |
WOS记录号 | WOS:000484917800057 |
出版者 | IEEE |
EI入藏号 | 20193207296507 |
EI主题词 | 5G mobile communication systems ; Base stations ; Channel state information ; Stochastic systems ; Wireless networks |
EI分类号 | Electric Power Systems:706.1 ; Radio Systems and Equipment:716.3 ; Systems Science:961 |
原始文献类型 | Proceedings Paper |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/49051 |
专题 | 信息科学与技术学院_PI研究组_周勇组 |
通讯作者 | Hsiung, Cinnie |
作者单位 | 1.University of British Columbia, Vancouver, Canada 2.ShanghaiTech University, Shanghai, China |
推荐引用方式 GB/T 7714 | Hsiung, Cinnie,Huang, Rui,Zhou, Yong,et al. Dynamic User Pairing and Power Allocation for Throughput Maximization in NOMA Systems[C]:IEEE,2019. |
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