基于非完美信道信息的MIMO NOMA系统和速率最大化

doi:10.11959/j.issn.1000-436x.2019221

通信学报 ›› 2019, Vol. 40 ›› Issue (11): 94-100.doi: 10.11959/j.issn.1000-436x.2019221

基于非完美信道信息的MIMO NOMA系统和速率最大化

孙彦景^1,²,刘洋¹,周家思¹,曹起³,李松¹

¹ 中国矿业大学信息与控制工程学院，江苏徐州 221116
² 西安科技大学通信与信息工程学院，陕西西安 710600
³ 香港中文大学（深圳）理工学院，广东深圳 518172

修回日期:2019-09-27 出版日期:2019-11-25 发布日期:2019-12-06
作者简介:孙彦景（1977- ），男，山东滕州人，博士，中国矿业大学教授、博士生导师，主要研究方向为嵌入式实时系统、无线传感器网络、信息物理系统。|刘洋（1995- ），女，江苏徐州人，中国矿业大学硕士生，主要研究方向为 NOMA无线通信。|周家思（1993- ），男，安徽淮北人，中国矿业大学博士生，主要研究方向为MIMO无线通信、NOMA无线通信、无线携能传输。|曹起（1990- ），男，湖南湘潭人，博士，香港中文大学（深圳）在站博士后，主要研究方向为人工智能无线电资源分配、MIMO无线通信、多用户传输和全双工协作通信。|李松（1985- ），男，山东济宁人，博士，中国矿业大学副教授，主要研究方向为全双工通信、信息物理系统、协作通信。
基金资助:
徐州市科技计划基金资助项目(KC18105);徐州市科技计划基金资助项目(KC18068);国家自然科学基金资助项目(51734009);国家自然科学基金资助项目(51804304);国家自然科学基金资助项目(61771417);江苏省自然科学基金资助项目(BK20180640);大学生科研训练计划基金资助项目(201910290020Z)

Sum-rate maximization in MIMO NOMA system with imperfect CSI

Yanjing SUN^1,²,Yang LIU¹,Jiasi ZHOU¹,Qi CAO³,Song LI¹

¹ School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221116,China
² School of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710600,China
³ School of Science and Engineering,Chinese University of Hong Kong (Shenzhen Campus),Shenzhen 518172,China

Revised:2019-09-27 Online:2019-11-25 Published:2019-12-06
Supported by:
Key Research ＆ Development Project for Science and Technology of Xuzhou of China(KC18105);Key Research ＆ Development Project for Science and Technology of Xuzhou of China(KC18068);The National Natural Science Foundation of China(51734009);The National Natural Science Foundation of China(51804304);The National Natural Science Foundation of China(61771417);The Natural Science Foundation of Jiangsu Province(BK20180640);Student Research Training Program(201910290020Z)

摘要/Abstract

摘要：

基于非完美信道状态信息，针对系统发射功率受限和用户速率需求约束下的系统和速率最大化问题，结合多输入多输出（MIMO）和非正交多址接入（NOMA）技术设计预编码和接收机。限定强用户的每条数据流都需要解码相应的弱用户信号以利用串行干扰技术消除弱用户信号的干扰，利用半正定规划和一阶泰勒展开将所形成的非凸优化问题转化为D.C.问题，并采用罚函数解决预编码秩为1的限制。仿真结果表明，相比于正交多址接入技术，所提出的D.C.算法可以提高系统和速率。

关键词: 多输入多输出, 非正交多址接入, 预编码设计, D.C.规划

Abstract:

In order to solve the problem of maximizing the sum rate under the constraints of transmission power limitation and users’ rates requirements,precoder and receiver were devised by combining multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) based on imperfect channel state information (CSI).To take advantage of successive interference cancellation (SIC) techniques to eliminate interference from weak user’s signal,each data stream of the strong user needed to decode the corresponding weak user’s signal.Since the problem formed was non-convex,it was converted into the problem with the difference of two convex functions (D.C.) by using semi-positive definite programming and first-order Taylor expansion,and a penalty function was used to solve the constraint of the rank of the precoding covariance matrix.The simulation results show that compared with the orthogonal multiple access technology,the proposed D.C.algorithm can improve system sum rate.

Key words: multiple-input multiple-output, non-orthogonal multiple access, precoding design, D.C.programming

中图分类号:

TN929.5

孙彦景,刘洋,周家思,曹起,李松. 基于非完美信道信息的MIMO NOMA系统和速率最大化[J]. 通信学报, 2019, 40(11): 94-100.

Yanjing SUN,Yang LIU,Jiasi ZHOU,Qi CAO,Song LI. Sum-rate maximization in MIMO NOMA system with imperfect CSI[J]. Journal on Communications, 2019, 40(11): 94-100.

图/表 4

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基于非完美信道信息的MIMO NOMA系统和速率最大化

Sum-rate maximization in MIMO NOMA system with imperfect CSI

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