Mitigating Gibbs Effect Time-Varying Wireless Channel Estimation Based on CE-BEM

YANG Xiao-ping; GU Ya-ping; ZHANG Jun

doi:10.3969/j.issn.0372-2112.2013.01.024

您当前的位置：

首页 >

文章列表页 >

Mitigating Gibbs Effect Time-Varying Wireless Channel Estimation Based on CE-BEM

更新时间：2025-07-16

- Mitigating Gibbs Effect Time-Varying Wireless Channel Estimation Based on CE-BEM
- Acta Electronica Sinica Vol. 41, Issue 1, Pages: 138-143(2013)
- 作者机构：
  
  中国科学院声学研究所东海研究站,上海,200032
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2013.01.024
  CLC： TP393
- Published：2013
- 稿件说明：
移动端阅览
YANG Xiao-ping, GU Ya-ping, ZHANG Jun. Mitigating Gibbs Effect Time-Varying Wireless Channel Estimation Based on CE-BEM[J]. Acta Electronica Sinica, 2013, 41(1): 138-143.
DOI：

YANG Xiao-ping, GU Ya-ping, ZHANG Jun. Mitigating Gibbs Effect Time-Varying Wireless Channel Estimation Based on CE-BEM[J]. Acta Electronica Sinica, 2013, 41(1): 138-143. DOI： 10.3969/j.issn.0372-2112.2013.01.024.

摘要

复指数基扩展模型(CE-BEM)具有计算简单、不依赖于信道统计特征等优点

广泛地应用于时变信道估计中.但是CE-BEM由于Gibbs效应存在较大模型误差

本文分析了CE-BEM的模型误差以及基线倾斜法对模型误差的影响

提出了一种抑制模型误差的信道估计方法

该方法利用时分复用导频的特征估计出区间上的斜率

再结合基线倾斜法推导了新的数据模型

并给出LS算法和LMMSE算法.最后通过计算机仿真研究表明:该方法在较高的多普勒频移扩展的情况下有效的降低了关键性采样CE-BEM和过采样CE-BEM信道估计的MSE值

特别是关键性采样CE-BEM改善明显.

Abstract

Complex Exponential Basis Expansion Model(CE-BEM) has the advantage of simple computation

independence on channel statistics and so on

it is used to time varying of channel estimation widely.But Gibbs effect produces unignored model error of CE-BEM.The paper analyzes the model error and the impact of baseline tilting method

then presents an channel estimator which mitigates the model error

the method estimate the slope of block period

then derives the new data model combined with the baseline tilting method and the LS algorithm and LMMSE algorithm.Computer simulation show that suggested method decreases MSE of critical-sampled CE-BEM and over-sampled CE-BEM in case of higher Doppler frequency shift extension

especially for the critical-sampled CE-BEM

performance is improved considerably.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Location Sensing Empowered Superimposed Pilot Transmission Assisted by Reconfigurable Intelligent Surface

An Accurate DOA Estimation Method for mmWave Large-Scale Antenna Arrays

Differential Coding and Neural Network-Aided Channel Estimation in OFDM Systems

Intelligent Channel Estimation of SC-FDMA Based on GNN for V2I Scenarios in Internet of Vehicles

Related Author

ZHAO Ben

XIA Wen-chao

ZHAO Hai-tao

NI Yi-yang

ZHU Hong-bo

YIN Peng

LIU De-kang

ZHENG Chen

Related Institution

Jiangsu Provincial Key Laboratory of Wireless Communications and Internet of Things, Nanjing University of Posts and Telecommunications

College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications

School of Cyber Security, University of Chinese Academy of Sciences

Defence Industry Secrecy Examination and Certification Center

Institute of Unmanned System, Beihang University

⁰