| 一种基于自适应子空间跟踪与Jacobi算法的时变信道有限反馈预编码方法 |
| |
| 引用本文： | 李汀,杨绿溪.一种基于自适应子空间跟踪与Jacobi算法的时变信道有限反馈预编码方法[J].高技术通讯,2009,19(8). |
| |
| 作者姓名： | 李汀 杨绿溪 |
| |
| 作者单位： | 东南大学信息科学与工程学院,南京,210096 |
| |
| 基金项目： | 国家重点基础研究发展计划，国家自然科学基金，863计划，江苏省自然科学基金 |
| |
| 摘 要： | 提出了一种基于自适应子空间跟踪与Jacobi算法的时变信道有限反馈预编码方法.该方法针对无线信道的时变性,利用梯度算法自适应跟踪时变信道的发射预编码矩阵,同时考虑了反馈信道有限比率的反馈比特数,将Jacobi迭代算法应用于时变信道右奇异矩阵的跟踪,从而有效降低了每个反馈帧的反馈比特数.计算机仿真表明,在时变信道,该方法在降低反馈量的同时,还获得了比存在反馈延时的Grassmannian预编码方法更好的系统容量性能.
|
| 关 键 词： | 自适应子空间跟踪 Jacobi 算法 有限反馈预编码 |
A limited feedback precoding method based on adaptive subspace tracking and Jacobi algorithm for time-varying channels |
| |
| Li Ting,Yang Luxi.A limited feedback precoding method based on adaptive subspace tracking and Jacobi algorithm for time-varying channels[J].High Technology Letters,2009,19(8). |
| |
| Authors: | Li Ting Yang Luxi |
| |
| Affiliation: | Li Ting,Yang Luxi(School of Information Science and Engineering,Southeast University,Nanjing 210096) |
| |
| Abstract: | This paper proposes a limited feedback precoding method based on adaptive subspace tracking and Jacobi algorithm for time-varying channels. In view of the time-variability of wireless channels, this method uses a gradient algorithm for transmission tracking of the precoding matrix for time-varying channels. Meanwhile, considering the bandwidth limits of feedback channels, it uses the Jacobi algorithm to update the right singular matrix of time-varying channels, which significantly reduces the feedback bits.... |
| |
| Keywords: | adaptive subspace tracking Jacobi algorithm limited feedback precoding |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
