基于用户协作的认知MIMO干扰网络自由度上界研究

朱世磊; 郑娜娥; 王盛; 胡捍英

doi:10.11959/j.issn.1000-436x.2015206

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基于用户协作的认知MIMO干扰网络自由度上界研究

学术论文 | 更新时间：2024-06-05

- 基于用户协作的认知MIMO干扰网络自由度上界研究
- Upper bound of degrees of freedom in cognitive MIMO interference network with user cooperation
- 通信学报 2015年36卷第8期页码：153-160
- 作者机构：
  
  解放军信息工程大学导航与空天目标工程学院，河南郑州 450002
- 作者简介：
  
  [ "朱世磊（1987-），男，江苏淮安人，解放军信息工程大学博士生，主要研究方向为MIMO无线通信、认知无线电频谱共享、预编码和干扰对齐技术。" ]
  [ "郑娜娥（1984-），女，福建漳州人，博士，解放军信息工程大学讲师，主要研究方向为 MIMO 信号处理和无线资源分配。" ]
  [ "王盛（1984-），男，山东招远人，解放军信息工程大学博士生、助理工程师，主要研究方向为移动通信系统。" ]
  [ "胡捍英（1961-），男，河南内乡人，解放军信息工程大学教授、博士生导师，主要研究方向为无线通信和空间信息技术。" ]
- 基金信息：
  
  国家科技重大专项基金资助项目(2011ZX03003-003-02);国家高技术发展计划（“863”计划）基金资助项目(2012AA01A502);国家高技术发展计划（“863”计划）基金资助项目(2012AA01A505)
- DOI：10.11959/j.issn.1000-436x.2015206
  中图分类号： TN92
- 网络出版日期：2015-08，
  
  纸质出版日期：2015-08-25
- 稿件说明：
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朱世磊, 郑娜娥, 王盛, 等. 基于用户协作的认知MIMO干扰网络自由度上界研究[J]. 通信学报, 2015,36(8):153-160.

Shi-lei ZHU, Na-e ZHENG, Sheng WANG, et al. Upper bound of degrees of freedom in cognitive MIMO interference network with user cooperation[J]. Journal on communications, 2015, 36(8): 153-160.
朱世磊, 郑娜娥, 王盛, 等. 基于用户协作的认知MIMO干扰网络自由度上界研究[J]. 通信学报, 2015,36(8):153-160. DOI： 10.11959/j.issn.1000-436x.2015206.

Shi-lei ZHU, Na-e ZHENG, Sheng WANG, et al. Upper bound of degrees of freedom in cognitive MIMO interference network with user cooperation[J]. Journal on communications, 2015, 36(8): 153-160. DOI： 10.11959/j.issn.1000-436x.2015206.

摘要

在K+1用户认知 MIMO 干扰网络中，传统算法区分对待主/次用户干扰，将其对齐压缩到不同的干扰空间上，导致空间自由度的浪费。从复用干扰空间的角度出发，推导了新的自由度上界及其必要条件。为了验证其合理性和正确性，设计了联合干扰对齐指标，并结合范数理论和Rayleigh-Ritz定理提出一种协作联合干扰对齐算法，并对算法的有效性进行了分析。理论分析和仿真结果表明，新的自由度上界突破了已有文献所给上界，且可通过所提算法达到。

Abstract

In(K+1)-user cognitive MIMO interference network

conventional algorithms distinguish the interference of primary users and secondary users by aligning them to the different interference space

separately.Therefore

it leads to the loss of spatial degrees of freedom(DoF).From the perspective of multiplexing the interference space

a new upper bound of DoF and its necessary condition was deduced.Furthermore

to verify the rationality and validity of the new upper bound

a cooperative joint interference alignment algorithm

in which a joint interference alignment indicator was designed and proposed based on norm theory and Rayleigh-Ritz theorem.The effectiveness of the algorithm was analyzed.Theoretical analysis and simulation results show that the new upper bound of DoF breaks upper bound given in the existing papers

and it can be achieved by the proposed algorithm.

关键词

Keywords

references

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