Blind Channel Estimation Method Based on OSTBCs

CAO Xue-hong; YAO Wei-jian

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Blind Channel Estimation Method Based on OSTBCs

更新时间：2025-07-16

- Blind Channel Estimation Method Based on OSTBCs
- Acta Electronica Sinica Vol. 37, Issue 6, Pages: 1237-1241(2009)
- 作者机构：
  
  1. 南京工程学院,江苏,南京,211167
  2. 艾诺通信系统有限责任公司,江苏,苏州,215021
  3. 南京工程学院江苏南京,211167
  4. 艾诺通信系统有限责任公司江苏苏州,215021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN91
- Published：2009
- 稿件说明：
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CAO Xue-hong, YAO Wei-jian. Blind Channel Estimation Method Based on OSTBCs[J]. Acta Electronica Sinica, 2009, 37(6): 1237-1241.
DOI：

CAO Xue-hong, YAO Wei-jian. Blind Channel Estimation Method Based on OSTBCs[J]. Acta Electronica Sinica, 2009, 37(6): 1237-1241. DOI：

摘要

本文从MIMO OSTBC-OFDM系统的频域出发

利用编码的正交特性建立数学模型

采用归一化问题的最小值求解思想

提出了一种基于二阶统计特性的子空间信道盲估计算法

减少了数据的运算量.为了消除求解过程中出现的多个模糊度

本文采用预编码技术

提高了信道估计的精度.仿真实验证明

该估计算法收敛性好

对发送信号无特殊要求

不增加传输带宽.

Abstract

Based on the orthogonal feature

a mathematic model is established in frequency domain for MIMO OSTBC-OFDM systems.Then we present a subspace blind channel estimation method which subjects to the constrained optimization.This method has less computational complexity.Finally

we use precoding to resolve the ambiguities which are inherent to any second-order statistics(SOS) based method.The results show that the presented estimation method has faster convergence

and it has no constraint for input symbols or additional bandwidth consumption.

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