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Symbol time offset estimation in coherent OFDM systems

Landström, Daniel LU ; Wilson, SK; van de Beek, JJ; Ödling, Per LU and Börjesson, Per Ola LU (2002) In IEEE Transactions on Communications 50(4). p.545-549
Abstract
This paper presents a symbol time offset estimator for coherent orthogonal frequency division multiplexing (OFDM) systems. The estimator exploits both the redundancy in the cyclic prefix and available pilot symbols used for channel estimation. The estimator is robust against frequency offsets and is suitable for use in dispersive channels. We base the estimator on the maximum-likelihood estimator for the additive white Gaussian noise channel. Simulations for an example system indicate a system performance as close as 0.6 dB to a perfectly synchronized system.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
delay estimation, communication system, multicarrier, frequency division multiplexing (OFDM), orthogonal, synchronization, time estimation
in
IEEE Transactions on Communications
volume
50
issue
4
pages
545 - 549
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000175044700007
  • scopus:0036529672
ISSN
0090-6778
DOI
10.1109/26.996067
language
English
LU publication?
yes
id
803465a9-0190-4f4a-9655-713219a58b35 (old id 340329)
date added to LUP
2007-11-07 15:52:48
date last changed
2017-06-18 04:21:27
@article{803465a9-0190-4f4a-9655-713219a58b35,
  abstract     = {This paper presents a symbol time offset estimator for coherent orthogonal frequency division multiplexing (OFDM) systems. The estimator exploits both the redundancy in the cyclic prefix and available pilot symbols used for channel estimation. The estimator is robust against frequency offsets and is suitable for use in dispersive channels. We base the estimator on the maximum-likelihood estimator for the additive white Gaussian noise channel. Simulations for an example system indicate a system performance as close as 0.6 dB to a perfectly synchronized system.},
  author       = {Landström, Daniel and Wilson, SK and van de Beek, JJ and Ödling, Per and Börjesson, Per Ola},
  issn         = {0090-6778},
  keyword      = {delay estimation,communication system,multicarrier,frequency division multiplexing (OFDM),orthogonal,synchronization,time estimation},
  language     = {eng},
  number       = {4},
  pages        = {545--549},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Communications},
  title        = {Symbol time offset estimation in coherent OFDM systems},
  url          = {http://dx.doi.org/10.1109/26.996067},
  volume       = {50},
  year         = {2002},
}