Frequency-averaged MMSE channel estimator for multicarrier transmission schemes

Yoshitaka Hara, Akinori Taira, Loïc Brunel, Thomas Sälzer

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

A new frequency-averaged MMSE estimator is proposed for multicarrier transmission schemes. The proposed estimator employs a new criterion of minimizing the mean square errors (MSE) over subcarriers, which provides an accurate channel estimation using a few pilot OFDM symbols without a priori channel knowledge. The proposed estimator has low complexity, since it uses high correlated adjacent subcarriers and neglects low correlated distant subcarriers. In the estimation process, intersymbol and intersubcarrier interference due to excess delay paths beyond guard interval is considered to achieve good performance. The simulation results showed that the frequency-averaged MMSE estimator can effectively reduce estimation error and keeps better performance than the conventional robust estimator in any channel conditions.

Original languageEnglish
Pages (from-to)378-384
Number of pages7
JournalIEEE Vehicular Technology Conference
Volume60
Issue number1
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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