A compressive sensing based iterative algorithm for channel and impulsive noise estimation in underwater acoustic OFDM systems
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© 2017 Marine Technology Society. Underwater acoustic (UA) channel is often affected by strong impulsive noise. In this paper, a compressive sensing based iterative algorithm is proposed to accurately estimate the channel state information and mitigate the impulsive noise, which is important to ensure high-speed data transmission in UA orthogonal frequency-division multiplexing communication systems. By exploiting the sparsity of the impulsive noise and channel impulse response in the time domain, we adopt the orthogonal matching pursuit algorithm to improve the accuracy of channel estimation with relatively low computational complexity. The proposed algorithm is evaluated through numerical simulations and real data collected during a UA communication experiment conducted in December 2015 in the estuary of the Swan River, Western Australia. The results show that the proposed algorithm has a better performance than existing approaches.
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Joint Channel Estimation and Impulsive Noise Mitigation in Underwater Acoustic OFDM Communication SystemsChen, Jaden; Rong, Yue; Nordholm, Sven; He, Z.; Duncan, Alec (2017)IEEE Impulsive noise occurs frequently in underwater acoustic (UA) channels and can significantly degrade the performance of UA orthogonal frequency-division multiplexing (OFDM) systems. In this paper, we propose two novel ...
Chen, Jaden; Rong, Yue; Nordholm, Sven (2016)Orthogonal frequency-division multiplexing (OFDM) technique has become a popular choice for underwater acoustic (UA) networks recently. Impulsive noise is one of the factors that limit the performance of this technique, ...
Compressed sensing based channel estimation and impulsive noise cancelation in underwater acoustic OFDM systemsChen, P.; Rong, Yue; Nordholm, Sven; Duncan, Alec; He, Z. (2017)Impulsive noise occurs frequently in underwater acoustic (UA) channels and can significantly degrade the performance of UA orthogonal frequency-division multiplexing (OFDM) systems. In this paper, we propose a novel ...