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2011•Unpublished venueRequires access

Estimation and compensation of Doppler effect in UAC OFDM systems

Sadia Ahmed, Hüseyin Arslan

Open publisher page 1 citations

Abstract

Doppler effect causes loss of orthogonality in Orthogonal Frequency Division Multiplexing (OFDM), which in turn may severely degrade receiver performance. In high data rate underwater acoustic communication (UAC) systems, the effect of Doppler varies considerably over OFDM band. This research presents an algorithm to avoid and/or to compensate the effect of varying Doppler shift over OFDM sub-carriers in order to maintain orthogonality and/or to compensate loss of orthogonality.

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What this paper is about

Doppler effect causes loss of orthogonality in Orthogonal Frequency Division Multiplexing (OFDM), which in turn may severely degrade receiver performance. In high data rate underwater acoustic communication (UAC) systems, the effect of Doppler varies considerably over OFDM band. This research presents an algorithm to avoid and/or to compensate the effect of varying Doppler shift over OFDM sub-carriers in order to maintain orthogonality and/or to compensate loss of orthogonality.

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Available abstract

Doppler effect causes loss of orthogonality in Orthogonal Frequency Division Multiplexing (OFDM), which in turn may severely degrade receiver performance. In high data rate underwater acoustic communication (UAC) systems, the effect of Doppler varies considerably over OFDM band. This research presents an algorithm to avoid and/or to compensate the effect of varying Doppler shift over OFDM sub-carriers in order to maintain orthogonality and/or to compensate loss of orthogonality.

Key concepts: Orthogonal frequency-division multiplexing, Orthogonality, Doppler effect, Compensation (psychology), Computer science, Doppler frequency, Electronic engineering, Underwater acoustic communication

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