Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels

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

doi:10.1109/OCEANSE.2009.5278270

Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels

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

Electrical, Computer, and Energy Engineering, School of (IAFSE-ECEE)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

29 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 language	English (US)
Title of host publication	OCEANS '09 IEEE Bremen: Balancing Technology with Future Needs
DOIs	https://doi.org/10.1109/OCEANSE.2009.5278270
State	Published - 2009
Event	OCEANS '09 IEEE Bremen: Balancing Technology with Future Needs - Bremen, Germany Duration: May 11 2009 → May 14 2009

Other

Other	OCEANS '09 IEEE Bremen: Balancing Technology with Future Needs
Country/Territory	Germany
City	Bremen
Period	5/11/09 → 5/14/09

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Ocean Engineering
Communication

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10.1109/OCEANSE.2009.5278270

Cite this

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title = "Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels",

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.",

author = "Kai Tu and Dario Fertonani and Duman, {Tolga M.} and Paul Hursky",

year = "2009",

doi = "10.1109/OCEANSE.2009.5278270",

language = "English (US)",

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TY - GEN

T1 - Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels

AU - Tu, Kai

AU - Fertonani, Dario

AU - Duman, Tolga M.

AU - Hursky, Paul

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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Y2 - 11 May 2009 through 14 May 2009

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Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels

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