An adaptive channel estimation scheme for OFDM system with transmitter diversity

KY Kuan*, S Suthaharan, A Nallanathan

*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

In this paper, an adaptive channel estimation scheme is proposed for space-time block coded orthogonal frequency division multiplexing (ST-OFDM) systems. In this scheme, a computationally efficient decoupled maximum likelihood (DEML) algorithm is used to estimate initial channel parameter values. Once the initial values are obtained, an adaptive algorithm is used to obtain more accurate channel estimate values. It is shown that the proposed channel estimation scheme can eliminate the error floor substantially and perform quite close to the system with perfect channel state information for non-time-selective fading channel. For time-selective fading channels, it has the ability to track the channel adaptively without training symbols.

Original languageEnglish
Title of host publicationGLOBECOM'03: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-7
Place of PublicationNEW YORK
PublisherIEEE
Pages873-877
Number of pages5
ISBN (Print)0-7803-7974-8
Publication statusPublished - 2003
EventIEEE Global Telecommunications Conference (GLOBECOM 03) - San Francisco, Canada
Duration: 1 Dec 20035 Dec 2003

Publication series

NameIEEE Global Telecommunications Conference (Globecom)
PublisherIEEE

Conference

ConferenceIEEE Global Telecommunications Conference (GLOBECOM 03)
Country/TerritoryCanada
Period1/12/20035/12/2003

Keywords

  • diversity
  • fading channels
  • frequency selective fading OFDM
  • space-time codes
  • channel estimation

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