Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels

Kai Tu, Dario Fertonani, Tolga M. Duman, Paul Hursky

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Scopus citations

Abstract

Transmission schemes based on orthogonal frequency division multiplexing (OFDM) are promising for underwater acoustic (UWA) communications, thanks to their robustness to large multipath spreads. On the other hand, due to the significant time variations in the UWA channels, the effectiveness of the standard OFDM receivers is impaired by intercarrier interference (ICI). In this paper, we propose two novel ICI-mitigation techniques. In the first scheme, the ICI coefficients are explicitly estimated, and minimum mean square error (MMSE) equalization based on such estimates is performed. In the second approach, no explicit ICI estimation is performed, and detection is based on an adaptive decision-feedback equalizer (DFE) applied in the frequency domain across different subcarriers. We report simulation results showing the effectiveness of the proposed schemes, compared to the performance of a standard OFDM receiver neglecting ICI, and results obtained by processing real data recorded in the recent KAM08 experiment.

Original languageEnglish (US)
Title of host publicationOCEANS '09 IEEE Bremen: Balancing Technology with Future Needs
DOIs
StatePublished - 2009
EventOCEANS '09 IEEE Bremen: Balancing Technology with Future Needs - Bremen, Germany
Duration: May 11 2009May 14 2009

Other

OtherOCEANS '09 IEEE Bremen: Balancing Technology with Future Needs
CountryGermany
CityBremen
Period5/11/095/14/09

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Ocean Engineering
  • Communication

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    Tu, K., Fertonani, D., Duman, T. M., & Hursky, P. (2009). Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels. In OCEANS '09 IEEE Bremen: Balancing Technology with Future Needs [5278270] https://doi.org/10.1109/OCEANSE.2009.5278270