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基于遍历干扰对齐的MIMO干扰信道的自由度可达方案设计

作者:时间:2017-08-24点击数:

PDF全文下载:2017040113

欧清海1, 何清素2, 曾令康1, 于华东1, 李温静1, 刘芳3*

(1.国网信息通信产业集团有限公司,北京 102211;2.北京汇通金财信息科技有限公司,北京 100053;

3.北京邮电大学 电子工程学院,北京 100876)

摘要: 针对K-user MIMO干扰信道,当信道为时变信道或频选信道时,提出了一种基于遍历干扰对齐的自由度上限可达方案,该方案仅通过使用简单的线性预编码和有限个符号设计,就可以获得自由度上限。进而对提出的遍历干扰对齐方案能够达到的系统和速率进行推导,得到了和速率在任意信噪比环境下的闭式表达式。最后通过数值仿真,分析了系统参数对可达和速率的影响。

关键词: 自由度; 遍历干扰对齐; 干扰信道; 多入多出

中图分类号:  TN 929.5文献标志码: A

引用格式:欧清海, 何清素, 曾令康,等. 基于遍历干扰对齐的MIMO干扰信道的自由度可达方案设计\[J\]. 青岛科技大学学报(自然科学版), 2017, 38(4): 113-118.

OU Qinghai, HE Qingsu, ZENG Lingkang, et al. Achievable scheme of DoF for MIMO interference channel with ergodic interference alignment \[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2017, 38(4): 113-118.

Achievable Scheme of DoF for MIMO Interference Channel with Ergodic Interference Alignment

OU Qinghai1, HE Qingsu2, ZENG Lingkang1, YU Huandong1, LI Wenjing1, LIU Fang3

(1.State Grid Information and Telecommunication Group Co. LTD., Beijing 102211,China; 2.Beijiing Huitong Financial Information Technology Co.LTD.,Beijing 100053,China; 3.School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876,China)

Abstract: In this paper, based on ergodic interference alignment (IA), an achievable scheme with simply linear beamforming and finite symbols is proposed to achieve the upper degrees of freedom (DoF) for K-user multiple-input multiple-output (MIMO) interference channel with M transmitting antennas and N receiving antennas, and the channel coefficients are time varying or frequency selective. Furthermore, the achievable rate of the ergodic IA scheme is derived at any signal-to-noise ratio (SNR). By numerical simulation, the performance of the proposed scheme is evaluated.

Key words: DoF; ergodic interference alignment; interference channel; MIMO

收稿日期:    2016-06-07

基金项目: 国家973计划项目(2014CB339900);国家自然科学基金项目(61401042);国家电网公司科技项目(526800150054).

作者简介: 欧清海(1971—),男,高级工程师.*通信联系人.

文章编号: 1672-6987(2017)04-0113-06; DOI: 10.16351/j.1672-6987.2017.04.018