数据采集与处理2017，Vol.32Issue(6)：1115-1124,10.DOI:10.16337/j.1004-9037.2017.06.006
多用户干扰信道下建模于流形上的联合干扰对齐预编码
Manifold-Modeled Joint Interference Alignment Precoding in Multiuser Interference Channel
摘要
Abstract
Firstly ,from the perspective of subspace alignment ,the joint optimization problem of the in-terference signal power and the useful signal power is modeled on the Grassmannian manifold .The con-strained optimization problem is transformed into the unconstrained optimization problem with lower di-mension .Then ,using the geometric properties of the Grassmannian manifold ,a joint interference align-ment precoding scheme based on conjugate gradient algorithm on the Grassmannian manifold is proposed . Computer simulation results show that the proposed scheme improves the sum rate performance of the multiuser MIMO interference system by jointly considering the minimization of the interference signal power and the maximization of the useful signal power ,and also improves the convergence speed by effec-tively solving the 90° turning problem of the Grassmannian steepest descent algorithm .关键词
多用户干扰信道/干扰对齐/Grassmannian流形/最优化算法Key words
multiuser interference channel/interference alignment/Grassmannian manifold/optimization algorithm分类
信息技术与安全科学引用本文复制引用
李汀..多用户干扰信道下建模于流形上的联合干扰对齐预编码[J].数据采集与处理,2017,32(6):1115-1124,10.基金项目
国家自然科学基金(61771254,61471200)资助项目 （61771254,61471200）
江苏省自然科学基金(BK20140881)资助项目 （BK20140881）
南京邮电大学(2016外71)资助项目. （2016外71）
