Performance Enhancement of Underwater Acoustic OFDM Communication Systems

The supported bandwidth of the underwater communication systems is limited to several kilo hertz, which considers as the main challenge for Underwater Acoustic (UWA) communications. Meanwhile, the Bit-Error-Rate (BER) performance of the UWA systems is degrades as a result of water temperature, water...

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Bibliographic Details
Published in:Wireless personal communications 2019-10, Vol.108 (4), p.2047-2057
Main Authors: El-Mahallawy, Mohamed, TagEldien, Adly S., Elagooz, Salah S.
Format: Article
Language:English
Subjects:
Algorithms
Attenuation
Coding
Communications Engineering
Communications systems
Computer Communication Networks
Computer simulation
Engineering
Error correcting codes
Fast Fourier transformations
Fourier transforms
Networks
Orthogonal Frequency Division Multiplexing
Performance enhancement
Signal,Image and Speech Processing
Underwater acoustics
Underwater communication
Water temperature
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Summary:The supported bandwidth of the underwater communication systems is limited to several kilo hertz, which considers as the main challenge for Underwater Acoustic (UWA) communications. Meanwhile, the Bit-Error-Rate (BER) performance of the UWA systems is degrades as a result of water temperature, water salinity, attenuation, and multi-path propagation. In this paper, we present a modification to the conventional Orthogonal Frequency Division Multiplexing (OFDM) based (FFT) using Fast Walsh–Hadamard transform (FWHT) instead of Fast Fourier Transform (FFT). Also, the proposed algorithm is encoded and decoded using Low Density Parity Check (LDPC) coding algorithm. Simulation results show that the proposed algorithm with LDPC coding can improve the BBER system performance than the corresponding traditional one.
ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-019-06508-6