Advanced

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

Hammarberg, Peter LU and Edfors, Ove LU (2006) 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications In 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No. 06TH8881)
Abstract
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
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
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
in
2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No. 06TH8881)
pages
5 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications
external identifiers
  • Scopus:44949209333
ISBN
1-4244-0329-4
DOI
10.1109/PIMRC.2006.253938
language
English
LU publication?
yes
id
be421933-7704-4eef-a504-86b101d9f949 (old id 616808)
date added to LUP
2007-11-24 10:14:18
date last changed
2016-10-13 04:40:09
@misc{be421933-7704-4eef-a504-86b101d9f949,
  abstract     = {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},
  author       = {Hammarberg, Peter and Edfors, Ove},
  isbn         = {1-4244-0329-4},
  keyword      = {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},
  language     = {eng},
  pages        = {5},
  publisher    = {ARRAY(0x82ab6f0)},
  series       = {2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No. 06TH8881)},
  title        = {A comparison of DFT and SVD based channel estimation in MIMO OFDM systems},
  url          = {http://dx.doi.org/10.1109/PIMRC.2006.253938},
  year         = {2006},
}