缓存辅助的协作NOMA携能传输

doi:10.11959/j.issn.1000-436x.2023107

通信学报 ›› 2023, Vol. 44 ›› Issue (6): 77-89.doi: 10.11959/j.issn.1000-436x.2023107

缓存辅助的协作NOMA携能传输

杨龙, 赵丽, 周雨晨, 贺冰涛, 陈健

西安电子科技大学通信工程学院，陕西西安 710071

修回日期:2023-05-16 出版日期:2023-06-25 发布日期:2023-06-01
作者简介:杨龙（1988- ），男，陕西潼关人，博士，西安电子科技大学副教授、博士生导师，主要研究方向为非正交多址接入、移动边缘计算、协作通信等
赵丽（1997- ），女，山西阳高人，西安电子科技大学硕士生，主要研究方向为非正交多址接入、协作通信等
周雨晨（1991- ），女，陕西咸阳人，博士，西安电子科技大学副教授、硕士生导师，主要研究方向为物联网、信息物理系统、无线网络虚拟化等
贺冰涛（1991- ），男，陕西西安人，博士，西安电子科技大学讲师，主要研究方向为协作通信、物理层安全和非正交多址接入
陈健（1968- ），男，江苏如东人，博士，西安电子科技大学教授、博士生导师，主要研究方向为物理层安全、无线传感网络、非正交多址接入等
基金资助:
国家自然科学基金资助项目(61971320);国家自然科学基金资助项目(62201421);陕西省重点产业创新链基金资助项目(2023-ZDLGY-50);陕西省自然科学基础研究计划基金资助项目(2021JQ-206);广东省基础与应用基础研究基金资助项目(2020A1515110084)

Buffer-aided cooperative NOMA with power transfer

Long YANG, Li ZHAO, Yuchen ZHOU, Bingtao HE, Jian CHEN

School of Telecommunication Engineering, Xidian University, Xi’an 710071, China

Revised:2023-05-16 Online:2023-06-25 Published:2023-06-01
Supported by:
The National Natural Science Foundation of China(61971320);The National Natural Science Foundation of China(62201421);The Shaanxi Key Industrial Innovation Chain Project(2023-ZDLGY-50);The Natural Science Basic Research Plan of Shaanxi Province(2021JQ-206);The Guangdong Basic and Applied Basic Research Foundation(2020A1515110084)

摘要/Abstract

摘要：

为提升多用户无线携能通信系统吞吐量，设计了一种缓存辅助的协作非正交多址接入（NOMA）携能传输方案，在平均/峰值功耗、用户速率、缓存队列稳定性等约束条件下，最大化系统平均吞吐量。为降低优化复杂度，引入 Lyapunov 方法，将长期平均优化问题转化为一系列时间离散的子优化问题，并提出了一种自适应传输与资源分配优化算法，能根据时变信道/缓存状态，动态优化工作模式、用户调度和功率分配。仿真结果表明，与已有方案相比，所提方案可显著提升平均吞吐量，且实现时延与吞吐量间性能的折中。

关键词: 协作非正交多址接入, 缓存辅助, 能量收集, 用户调度

Abstract:

To improve the throughput of multiuser simultaneous wireless information and power transfer systems, a buffer-aided cooperative non-orthogonal multiple access scheme with power transfer was designed to maximize the average throughput under the constraints of average/peak power, user’s rate, and the buffer stability.To reduce the optimization complexity, the Lyapunov’s method was introduced to convert the long-term average optimization problem into a series of time-discrete subproblems, and an adaptive transmission and resource allocation optimization algorithm was proposed, where the working mode, the user scheduling and the power allocation were dynamically optimized according to the time-varying channel/buffer state.Simulation results demonstrate that compared with the existing schemes, the proposed scheme can significantly enhance the average throughput whilst achieving the tradeoff between the delay and throughput.

Key words: cooperative non-orthogonal multiple access, buffer-aided, energy harvesting, user scheduling

中图分类号:

TN929.5

杨龙, 赵丽, 周雨晨, 贺冰涛, 陈健. 缓存辅助的协作NOMA携能传输[J]. 通信学报, 2023, 44(6): 77-89.

Long YANG, Li ZHAO, Yuchen ZHOU, Bingtao HE, Jian CHEN. Buffer-aided cooperative NOMA with power transfer[J]. Journal on Communications, 2023, 44(6): 77-89.

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缓存辅助的协作NOMA携能传输

Buffer-aided cooperative NOMA with power transfer

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