一种非对称结构MIMO干扰信道的干扰对齐方法  

An Interference Alignment Solution for MIMO Interference Channels with Asymmetric Structure

作　　者：蒋昊[1,2] 侯建军 JIANG Hao;HOU Jian-jun(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Engineering Research Center of EMC and GNSS Technology for Rail Transportation,Beijing 100044,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]北京市轨道交通电磁兼容与卫星导航工程技术研究中心,北京100044

出　　处：《北京理工大学学报》2020年第1期48-52,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金重点资助项目(61631013)

摘　　要：研究一种非对称结构MIMO干扰信道干扰对齐闭式解求解问题.通过将整个系统的干扰对齐问题,转化为两个子系统的干扰对齐问题,分析子系统之间相互影响的关系,构建包含系统解的方程组,进而可以用符号计算软件进行求解.所提方法可以在所需天线数量最小的条件下,实现非对称结构的MIMO干扰信道的干扰对齐,并以4用户系统为例,详细阐述了问题的求解过程.仿真部分对所提方法进行了验证,分析了方法的复杂度及优缺点.The interference alignment(IA)problem of multiple-input multiple-output(MIMO)interference channels with asymmetric structure was studied.The interference alignment problem of the whole system was resolved into the IA problems of two subsystems to build the equations which could be solved by symbolic computation software using the interaction between the subsystems.The proposed method can realize the IA of an asymmetrical MIMO channel under the condition that the number of antennas is minimum.Taking 4-user as an example to show the process of the proposed solution,simulation result reveals the advantages and disadvantages of the method which validates the proposed method and analyzes the complexity.

关 键 词：多输入多输出 干扰信道 干扰对齐 

分 类 号：O385[理学—流体力学]