Pilot-aided channel estimation methods for ICI reduction in mobile OFDM systems

Shih Kang Wang, Dah Chung Chang

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

5 Scopus citations

Abstract

Doppler effect causes intercarrier interference (ICI) in an OFDM system. Some researches have been found to mitigate the ICI effect in order to improve the system performance. However, ICI reduction algorithms usually require the information of the channel impulse response (CIR) even on each sample. In this paper we study several channel estimation algorithms for CIR estimation, including the frequency-domain and the time-domain approaches. We have shown that the time-domain Kalman filter channel estimator has better performance than others because it can estimate CIR sample by sample Simulation results also show that a proposed ICI mitigation algorithm incorporating the time-domain Kalman channel estimator achieves better BER performances at different mobile speeds.

Original languageEnglish
Title of host publication2009 6th IEEE Consumer Communications and Networking Conference, CCNC 2009
DOIs
StatePublished - 2009
Event2009 6th IEEE Consumer Communications and Networking Conference, CCNC 2009 - Las Vegas, NV, United States
Duration: 10 Jan 200913 Jan 2009

Publication series

Name2009 6th IEEE Consumer Communications and Networking Conference, CCNC 2009

Conference

Conference2009 6th IEEE Consumer Communications and Networking Conference, CCNC 2009
Country/TerritoryUnited States
CityLas Vegas, NV
Period10/01/0913/01/09

Keywords

  • Channel estimation
  • Channel impulse response estimation
  • ICI mitigation
  • Mobile channel
  • OFDM

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