Improving the convergence property of DFE using the deterministic blind channel estimation

QIAO Yan-tao; ZHANG Li-jun

您当前的位置：

首页 >

文章列表页 >

Improving the convergence property of DFE using the deterministic blind channel estimation

更新时间：2024-10-14

- Improving the convergence property of DFE using the deterministic blind channel estimation
- Issue 6, Pages: 74-80(2005)
- 作者机构：
  
  1. 上海交通大学图像通信与信息处理研究所
  2. 上海交通大学图像通信与信息处理研究所,上海,200030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Published：2005
- 稿件说明：
移动端阅览
QIAO Yan-tao, ZHANG Li-jun. Improving the convergence property of DFE using the deterministic blind channel estimation[J]. 2005, (6): 74-80.
DOI：

QIAO Yan-tao, ZHANG Li-jun. Improving the convergence property of DFE using the deterministic blind channel estimation[J]. 2005, (6): 74-80. DOI：

摘要

针对一种全盲的判决反馈均衡器(DFE)进行研究

它对快速时变信道的均衡非常有效。利用基于二阶统计量(SOS)的子空间法来得到关于信道系数的确定性估计

然后利用这个估计值求出DFE抽头系数在MMSE意义上的最优解

以此进行DFE的初始化。相比传统的利用周期性训练序列初始化DFE的方法

文章提出的方法不仅节省了带宽资源

而且对于信道的突发性时变能够自适应地重新初始化

从而避免了DFE均衡器的病态收敛。

Abstract

A blind decision feedback equalizer （DFE） algorithm was proposed. The subspace method which was based on the second-order statistics （SOS） was employed to give the parametric estimation of channels unsupervised. The DFE was initialized optimally in the sense of MMSE using the estimated channel coefficients. In the comparison with the conventional DFE with training sequence

the proposed algorithm has meaningful advantages in coping with the abrupt time-variance of channels by re-initialization during communication. The ill-convergence of DFE is avoided.

关键词

Keywords

references

Views

797

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Blind equalization algorithm based on complex support vector regression

Neural network blind equalization optimized by parallel genetic algorithm with partial elitist strategy

Blind frequency-domain channel estimation for STBC-SC-FDE systems via redundant precoding

Direct blind multiuser detection without channel estimation and equalizer design

Blind channel estimation for the uplink of MC-CDMA systems with timing offset

Related Author

Ling YANG

Liang CHEN

Bin ZHAO

Guolong ZHANG

Yuan LI

Er-fu WANG

Yuan-shuo ZHENG

Xin-wu CHEN

Related Institution

School of Information Science and Engineering, Lanzhou University

Electronic Engineering College, Heilongjiang University

Department of Unmanned Aerial Vehicle Engineering, Ordnance Engineering College

Department of Electronic Engineering, Nanjing University of Posts ＆ Telecommunication

First Department of Nanjing Electronics Technology Research Institute

AI问答

⁰