摘要
针对一般干扰网络下干扰对齐闭式解的问题,提出了一种新颖的、基于环式对齐链的干扰对齐闭式解方法.首先将干扰对齐预编码矩阵分解成若干个子矩阵,并精心设计其环式对齐链,尽可能压缩干扰子空间维度;然后基于环式对齐链,利用矩阵理论求解干扰对齐预编码矩阵和滤波矩阵.仿真结果表明,该方法实现了较高的系统和速率性能,并且具有较低的运算复杂度.
To obtain the closed-form interference alignment(IA)solution for general interference networks,a novel closed-form IA solution method based on ring-typed alignment chain is proposed.Frist,the IA precoding matrices are decomposed into several sub-matrices,and the ring-typed alignment chains are elaborately designed by compressing the interference subspace as much as possible.Then,based on the ring-typed alignment chains,the IA precoding matrices and filtering matrices are computed by the matrix theory.Simulation results verify that the proposed method achieves high sum-rate performance with low computational complexity.
作者
刘伟华
王中方
张秋闻
徐晋
丁汉清
LIU Wei-hua;WANG Zhong-fang;ZHANG Qiu-wen;XU Jin;DING Han-qing(School of Computer and Communication Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China)
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2021年第6期48-52,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(61901418,61771432)
河南省重点研发与推广专项项目(科技攻关)(202102210124,212102210174,212102210563)
河南省教育厅基础研究专项项目(21zx003)。
关键词
多用户干扰网络
干扰对齐
自由度
环式对齐链
求解方法
multiple-user interference networks
interference alignment
degrees of freedom
ring-typed alignment chain
solution method
