A Channel Estimation Method Based on the Improved LMS Algorithm for MIMO-OFDM Systems

Zhenfeng Zhang, Limin Xiao, Xin Su, Jie Zeng, Xibin Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Citations (Scopus)

Abstract

The least mean square (LMS) algorithm is a kind of typical adaptive filter algorithms. The algorithm of channel estimation algorithm based on LMS is no need to know the characteristics of channel and noise statistics, which make full use of channel correlation between front and back to reduce the influence of noise on channel estimation performance. In this paper, the LMS algorithm has been improved under the MIMO-OFDM systems. Then, a revised method for variable step size has been put forward, which accelerates the rate of convergence to improve channel estimation performance preferably. The simulation results show that the algorithm proposed in this paper not only has the fastest convergence compared with LMS and NLMS algorithm, but also has a better channel estimation(CE) performance than other estimation algorithms.

Original languageEnglish
Title of host publication12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781538633892
DOIs
Publication statusPublished - 11 Dec 2018
Externally publishedYes
Event12th International Symposium on Medical Information and Communication Technology, ISMICT 2018 - Sydney, Australia
Duration: 26 Mar 201828 Mar 2018

Publication series

NameInternational Symposium on Medical Information and Communication Technology, ISMICT
Volume2018-March
ISSN (Print)2326-828X
ISSN (Electronic)2326-8301

Conference

Conference12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
Country/TerritoryAustralia
CitySydney
Period26/03/1828/03/18

Keywords

  • MIMO-OFDM
  • NLMS
  • channel estimation
  • the least mean square algorithm
  • variable step size

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