Space-frequency signal alignment for optimal DoF in multi-carrier MIMO-NOMA systems

被引：0
|
作者：
Liu, Weihua [1 ]
Ding, Hanqing [1 ]
Xu, Jin [1 ]
Zhang, Zhe [1 ]
机构：
[1] Zhengzhou Univ Light Ind, Sch Comp & Commun Engn, Zhengzhou, Henan, Peoples R China
来源：
ELECTRONICS LETTERS | 2019年 / 55卷 / 22期
基金：
中国国家自然科学基金;
关键词：
antenna arrays; interference suppression; optimisation; MIMO communication; downlink multiinput multioutput nonorthogonal multiple access cellular networks; novel multicarrier signal alignment scheme; system capacity; spatial radio resources; multicarrier MIMO-NOMA systems; space-frequency signal alignment;
D O I：
10.1049/el.2019.2606
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In the process of maximising the utilisation of spatial and radio resources, interference is the major factor limiting the system capacity. In this Letter, a novel multi-carrier signal alignment (MCSA) scheme based on diagonal-block channel matrix is first proposed, to mitigate the interference in downlink multi-input multi-output non-orthogonal multiple access (MIMO-NOMA) cellular networks. The maximum degree of freedom (DoF) can be achieved by the iterative design of MCSA. Simulation results show the effectiveness and superiority of the proposed MCSA scheme in improving the sum-rate and DoF, by fully using multiple antennas and multiple carriers.
引用
收藏
页码：1203 / 1204
页数：2
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