联合时域-波束域非正交多址接入

doi:10.11959/j.issn.1000-436x.2021099

通信学报 ›› 2021, Vol. 42 ›› Issue (4): 76-88.doi: 10.11959/j.issn.1000-436x.2021099

• 专题：面向未来移动网络的大规模组网关键技术 • 上一篇下一篇

联合时域-波束域非正交多址接入

张朝阳, 吴佳佳, 王珏, 周楚

浙江大学信息与电子工程学院，浙江杭州 310027

修回日期:2021-03-09 出版日期:2021-04-25 发布日期:2021-04-01
作者简介:张朝阳（1973- ），男，湖北蕲春人，博士，浙江大学教授、博士生导师，主要研究方向为新一代无线通信与智能网络、智能协同感知等。
吴佳佳（1996- ），女，浙江湖州人，浙江大学硕士生，主要研究方向为大规模接入、毫米波通信等。
王珏（1994- ），女，江苏常州人，浙江大学博士生，主要研究方向为信号处理、大规模接入、大规模MIMO系统等。
周楚（1996- ），女，江苏盐城人，浙江大学硕士生，主要研究方向为大规模接入、索引调制等。
基金资助:
国家自然科学基金资助项目(61725104);国家自然科学基金资助项目(U20A20158);国家重点研发计划基金资助项目(2020YFB1807101);国家重点研发计划基金资助项目(2018YFB1801104)

Joint time and beam domain non-orthogonal multiple access

Zhaoyang ZHANG, Jiajia WU, Jue WANG, Chu ZHOU

College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Revised:2021-03-09 Online:2021-04-25 Published:2021-04-01
Supported by:
The National Natural Science Foundation of China(61725104);The National Natural Science Foundation of China(U20A20158);The National Key Research and Development Program of China(2020YFB1807101);The National Key Research and Development Program of China(2018YFB1801104)

摘要/Abstract

摘要：

为了提高系统容纳连接设备的能力，提出了一种适用于毫米波大规模多输入多输出系统的联合时域-波束域非正交多址接入方案。该方案利用用户空间信道的相关性和差异性实现波束域接入，利用稀疏扩频技术实现时域接入，并以提高系统的通信可靠性为优化目标，构造并求解了联合域稀疏接入矩阵设计的优化问题。最后，基于联合域信道质量对接入矩阵进行重构，并在消息传递算法中加入干扰消除操作，降低译码复杂度的同时提高了通信可靠性。

关键词: 毫米波, 非正交多址接入, 波束域, 可靠性

Abstract:

In order to improve the system’s ability to accommodate connected devices, a joint time and beam domain non-orthogonal multiple access (NOMA) scheme was proposed, which was suitable for millimeter wave massive multiple-input multiple-output (MIMO) systems.The correlation and difference of the users’ channel were utilized to realize beam-domain NOMA, and sparse spreading technology was utilized to realize time-domain NOMA.With the optimization goal of improving the communication reliability of the system, optimization problem of the joint domain sparse access matrix design was constructed and solved.Finally, the access matrix was reconstructed based on the channel quality of the joint domain, and the interference cancellation operation was added to the message passing algorithm (MPA), which reduced the decoding complexity and improves the communication reliability.

Key words: millimeter wave, NOMA, beam domain, reliability

中图分类号:

TN92

张朝阳, 吴佳佳, 王珏, 周楚. 联合时域-波束域非正交多址接入[J]. 通信学报, 2021, 42(4): 76-88.

Zhaoyang ZHANG, Jiajia WU, Jue WANG, Chu ZHOU. Joint time and beam domain non-orthogonal multiple access[J]. Journal on Communications, 2021, 42(4): 76-88.

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联合时域-波束域非正交多址接入

Joint time and beam domain non-orthogonal multiple access

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