Symbol time offset estimation in coherent OFDM systems
Författare
Summary, in English
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.
Publiceringsår
2002
Språk
Engelska
Sidor
545-549
Publikation/Tidskrift/Serie
IEEE Transactions on Communications
Volym
50
Issue
4
Fulltext
- Available as PDF - 273 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- delay estimation
- communication system
- multicarrier
- frequency division multiplexing (OFDM)
- orthogonal
- synchronization
- time estimation
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0090-6778