| 基于环式对齐链的干扰对齐闭式解方法 |
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| 引用本文： | 刘伟华,王中方,张秋闻,徐晋,丁汉清.基于环式对齐链的干扰对齐闭式解方法[J].北京邮电大学学报,2021,44(6):48-52. |
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| 作者姓名： | 刘伟华 王中方 张秋闻 徐晋 丁汉清 |
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| 作者单位： | 郑州轻工业大学 计算机与通信工程学院,郑州450002;中国科学院 信息工程研究所,北京100093 |
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| 基金项目： | 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) |
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| 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.
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| 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 |
| 收稿时间： | 2021-03-03 |
Closed-Form IA Solution Based on Ring-Typed Alignment Chain |
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| LIU Wei-hua,WANG Zhong-fang,ZHANG Qiu-wen,XU Jin,DING Han-qing.Closed-Form IA Solution Based on Ring-Typed Alignment Chain[J].Journal of Beijing University of Posts and Telecommunications,2021,44(6):48-52. |
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| Authors: | LIU Wei-hua WANG Zhong-fang ZHANG Qiu-wen XU Jin DING Han-qing |
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| Affiliation: | 1. School of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;2. Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: | 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. |
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| Keywords: | multiple-user interference networks interference alignment degrees of freedom ring-typed alignment chain solution method |
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