多用户MIMO系统中分布式迭代干扰对齐研究  

Distributed Iterative Interference Alignment in Multi-user MIMO System

作　　者：叶宗刚 赵迎芝 黄祥[1] 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《北京联合大学学报》2016年第4期48-52,共5页Journal of Beijing Union University

基　　金：长江学者和创新团队发展计划(IRT1299);重庆市科委项目(CSTC2012jj A40044;cstc2013yykf A40010);重庆市科委重点实验室专项经费;重庆邮电大学自然科学基金项目(A2011-51)

摘　　要：干扰是无线通信网中亟待解决的问题之一,针对多用户MIMO系统,结合最新的分布式算法,总结并比较了几种分布式迭代算法的复杂度以及能够实现的最大系统自由度。不同于两用户的MIMO X信道可以直接得到干扰对齐预编码矩阵,利用了信道互易性的分布式迭代算法能够很好地解决由于用户数和约束条件的增加造成干扰对齐预编码矩阵可能无解的问题。最后仿真验证了分布式迭代算法的有效性。Interference is one of the problems to be solved in the wireless communication network. In view of the multi-user MIMO system, this paper combines with the latest distributed algorithm, summarizes and compares the complexity and the degree of freedom of several distributed iterative algorithm. Different from two users of the MIMO channel X precoding matrix that can be directly designed by interference alignment, the distributed iterative algorithm using channel reciprocity can overcome the problem that the interference alignment precoding matrix may have no solution due to the increase of users and the constraints. Finally, the simulation verified the effectiveness of the distributed iterative algorithm.

关 键 词：无线通信 多输入多输出 干扰对齐 分布式迭代算法 

分 类 号：TN926[电子电信—通信与信息系统]