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A comparison of DFT and SVD based channel estimation in MIMO OFDM systems

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Author

Summary, in English

In this paper two simplified transform based estimators for MIMO OFDM systems using the DFT and an SVD based transform are compared over a tapped delay line channel model. In the resulting symbol error rate plots, it is seen that the DFT based estimator experiences an error floor caused by the mismatch between the discrete time model and a continuous time reality. This error floor becomes a problem at high SNR levels where high data-rate systems can be expected to operate. When using an SVD based estimator it is seen that this error floor is reduced at the cost of a somewhat increased estimator complexity

Publishing year

2006

Language

English

Publication/Series

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No. 06TH8881)

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • symbol error rate
  • tapped delay line channel model
  • orthogonal frequency division multiplexing
  • multiple input multiple output systems
  • MIMO OFDM systems
  • singular value decomposition
  • SVD based channel estimation
  • DFT based channel estimation
  • discrete Fourier transform
  • SNR
  • signal-to-noise ratio
  • high data-rate systems
  • discrete time model
  • continuous time reality

Conference name

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications

Conference date

2006-09-11 - 2006-09-14

Conference place

Helsinki, Finland

Status

Published

ISBN/ISSN/Other

  • ISBN: 1-4244-0329-4