Impulsive noise mitigation in underwater acoustic communication systems: Experimental studies

Document Type

Conference Proceeding

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Department of Electrical and Computer Engineering


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.

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Copyright 2019 IEEE. Publisher’s version of record:

Publication Title

2019 IEEE 9th Annual Computing and Communication Workshop and Conference (CCWC)