An all-digital frequency synchronization scheme for OFDM systems

Zhenhong Li, Aarne Mämmelä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

10 Citations (Scopus)

Abstract

The main purpose of this paper is to study the frequency synchronization problem in OFDM systems. A new frequency synchronization method is achieved by means of an all-digital synchronization loop including acquisition and tracking modes. The frequency offset is estimated only once per frame. The acquisition algorithm is based on periodically inserted reference symbols, and the tracking algorithm on the cyclic prefix of the OFDM symbols. The algorithm performance is assessed in an AWGN channel with a low SNR value and in the presence of a timing inaccuracy. The simulations show that the algorithm is accurate and the suggested frequency synchronization scheme works well.
Original languageEnglish
Title of host publicationProceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications
Subtitle of host publicationPIMRC '97
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages327-331
Volume2
ISBN (Print)0-7803-3871-5
DOIs
Publication statusPublished - 1997
MoE publication typeNot Eligible
Event8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97 - Helsinki, Finland
Duration: 1 Jul 19974 Jul 1997
Conference number: 8

Conference

Conference8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97
Abbreviated titlePIMRC '97
CountryFinland
CityHelsinki
Period1/07/974/07/97

Fingerprint

Orthogonal frequency division multiplexing
Synchronization

Keywords

  • Frequency synchronization
  • Frequency estimation
  • Tracking loops
  • OFDM
  • Phase estimation
  • AWGN channels
  • Timing
  • Research and development
  • Data communication
  • Degradation

Cite this

Li, Z., & Mämmelä, A. (1997). An all-digital frequency synchronization scheme for OFDM systems. In Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97 (Vol. 2, pp. 327-331). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/PIMRC.1997.630922
Li, Zhenhong ; Mämmelä, Aarne. / An all-digital frequency synchronization scheme for OFDM systems. Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2 Institute of Electrical and Electronic Engineers IEEE, 1997. pp. 327-331
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Li, Z & Mämmelä, A 1997, An all-digital frequency synchronization scheme for OFDM systems. in Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. vol. 2, Institute of Electrical and Electronic Engineers IEEE, pp. 327-331, 8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97, Helsinki, Finland, 1/07/97. https://doi.org/10.1109/PIMRC.1997.630922

An all-digital frequency synchronization scheme for OFDM systems. / Li, Zhenhong; Mämmelä, Aarne.

Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2 Institute of Electrical and Electronic Engineers IEEE, 1997. p. 327-331.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Mämmelä, Aarne

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AB - The main purpose of this paper is to study the frequency synchronization problem in OFDM systems. A new frequency synchronization method is achieved by means of an all-digital synchronization loop including acquisition and tracking modes. The frequency offset is estimated only once per frame. The acquisition algorithm is based on periodically inserted reference symbols, and the tracking algorithm on the cyclic prefix of the OFDM symbols. The algorithm performance is assessed in an AWGN channel with a low SNR value and in the presence of a timing inaccuracy. The simulations show that the algorithm is accurate and the suggested frequency synchronization scheme works well.

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Li Z, Mämmelä A. An all-digital frequency synchronization scheme for OFDM systems. In Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2. Institute of Electrical and Electronic Engineers IEEE. 1997. p. 327-331 https://doi.org/10.1109/PIMRC.1997.630922