Symbol time offset estimation in coherent OFDM systems
(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:
https://lup.lub.lu.se/record/340329
- author
- Landström, Daniel LU ; Wilson, SK ; van de Beek, JJ ; Ödling, Per LU and Börjesson, Per Ola LU
- organization
- publishing date
- 2002
- 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
- 2016-04-01 15:23:49
- date last changed
- 2022-01-28 05:05:16
@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}}, keywords = {{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 = {{https://lup.lub.lu.se/search/files/4383254/1059237.pdf}}, doi = {{10.1109/26.996067}}, volume = {{50}}, year = {{2002}}, }