Impulsive Noise Mitigation in Underwater Acoustic Communication Systems: Experimental Studies

Impulsive noise is a major impediment to orthogonal frequency-division multiplexing (OFDM) based underwater acoustic (UWA) communications. In this work, we evaluate the performance of a memoryless analog nonlinear preprocessor (MANP) that is used to mitigate outliers. The proposed MANP exhibits inte...

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Bibliographic Details
Published in2019 IEEE 9th Annual Computing and Communication Workshop and Conference (CCWC) pp. 0880 - 0885
Main Authors Barazideh, Reza, Sun, Wensheng, Natarajan, Balasubramaniam, Nikitin, Alexei V., Wang, Zhaohui
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2019
Subjects
Blanking
Doppler effect
Frequency modulation
Impulsive noise
memoryless analog nonlinear preprocessor (MANP)
OFDM
orthogonal frequency-division multiplexing (OFDM)
Parity check codes
Signal to noise ratio
underwater acoustic (UWA) communications
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DOI10.1109/CCWC.2019.8666616

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Summary:Impulsive noise is a major impediment to orthogonal frequency-division multiplexing (OFDM) based underwater acoustic (UWA) communications. In this work, we evaluate the performance of a memoryless analog nonlinear preprocessor (MANP) that is used to mitigate outliers. The proposed MANP exhibits intermittent nonlinearity only in the presence of the impulsive noise and suppresses the power of outliers based on their amplitudes. Since the outliers are distinguishable in the analog domain prior to anti-aliasing filtering, the MANP outperforms its digital counterparts in all scenarios. Experimental results using data collected in an under-ice environment, demonstrate the superior BER performance of our approach relative to classical nonlinear approaches such as blanking and clipping.
DOI:10.1109/CCWC.2019.8666616