TY - GEN
T1 - Impulsive Noise Suppression and Concatenated Code for OFDM Underwater Acoustic Communications
AU - Tan, Gang
AU - Yan, Shefeng
AU - Yang, Binbin
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Underwater acoustic (UWA) information transmission is vulnerable to the interference of impulsive noise, which has short duration, high energy and random occurrence, decreasing the reliability of the orthogonal frequency-division multiplexing (OFDM) systems seriously. In this paper, we introduce the symmetric alpha stable (SαS) distribution to model the underwater impulsive noise firstly, and verifies the accuracy by measured noise data. For strong impulsive interference, an adaptive window median filter algorithm based on Chebyshev inequality (AWMF-C) is proposed, which applies the Chebyshev inequality twice to filter out the impulses and designs an adaptive window median filter to suppress them. Secondly, the serial concatenated code with RS code as outer code and interleaver are applied to suppress the residual impulsive interference further. Simulation results show that the proposed algorithm can suppress impulsive noise effectively, and the concatenated coding system given in this paper can further reduce the bit error rate (BER) of the communications system under impulsive noise background.
AB - Underwater acoustic (UWA) information transmission is vulnerable to the interference of impulsive noise, which has short duration, high energy and random occurrence, decreasing the reliability of the orthogonal frequency-division multiplexing (OFDM) systems seriously. In this paper, we introduce the symmetric alpha stable (SαS) distribution to model the underwater impulsive noise firstly, and verifies the accuracy by measured noise data. For strong impulsive interference, an adaptive window median filter algorithm based on Chebyshev inequality (AWMF-C) is proposed, which applies the Chebyshev inequality twice to filter out the impulses and designs an adaptive window median filter to suppress them. Secondly, the serial concatenated code with RS code as outer code and interleaver are applied to suppress the residual impulsive interference further. Simulation results show that the proposed algorithm can suppress impulsive noise effectively, and the concatenated coding system given in this paper can further reduce the bit error rate (BER) of the communications system under impulsive noise background.
KW - OFDM
KW - Underwater acoustic (UWA) communications
KW - concatenated code
KW - impulsive noise suppression
KW - median filter
UR - http://www.scopus.com/inward/record.url?scp=85146429528&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC55723.2022.9984322
DO - 10.1109/ICSPCC55723.2022.9984322
M3 - Conference contribution
AN - SCOPUS:85146429528
T3 - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
BT - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
Y2 - 25 October 2022 through 27 October 2022
ER -