基于环式对齐链的干扰对齐闭式解方法

doi:10.13190/j.jbupt.2021-023

北京邮电大学学报 ›› 2021, Vol. 44 ›› Issue (6): 48-52.doi: 10.13190/j.jbupt.2021-023

基于环式对齐链的干扰对齐闭式解方法

刘伟华¹, 王中方², 张秋闻¹, 徐晋¹, 丁汉清¹

1. 郑州轻工业大学计算机与通信工程学院, 郑州 450002;
2. 中国科学院信息工程研究所, 北京 100093

收稿日期:2021-03-03 出版日期:2021-12-28 发布日期:2021-12-28
作者简介:刘伟华(1989—),男,讲师,硕士生导师,E-mail:liuweihua@zzuli.edu.cn.
基金资助:
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)

Closed-Form IA Solution Based on Ring-Typed Alignment Chain

LIU Wei-hua¹, WANG Zhong-fang², ZHANG Qiu-wen¹, XU Jin¹, DING Han-qing¹

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

Received:2021-03-03 Online:2021-12-28 Published:2021-12-28

摘要/Abstract

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.

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

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.

Key words: multiple-user interference networks, interference alignment, degrees of freedom, ring-typed alignment chain, solution method

中图分类号:

TN911.4

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.

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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基于环式对齐链的干扰对齐闭式解方法

Closed-Form IA Solution Based on Ring-Typed Alignment Chain

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