Journal
IEEE JOURNAL OF OCEANIC ENGINEERING
Volume 48, Issue 3, Pages 963-972Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JOE.2023.3245676
Keywords
Receivers; Decision feedback equalizers; Symbols; Sonar equipment; Field programmable gate arrays; Training; Real-time systems; Underwater communication; underwater acoustics
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This article presents a FPGA-based multihydrophone receiver and assesses its real-time performance in different shallow-water channels. The receiver, incorporating an integer precision multichannel linear equalizer, utilizes the Least Mean Squares Algorithm for tap updates. By employing a 64-hydrophone line array in the very high-frequency band, it achieves data rates of up to 465 kb/s over 100 m and 155 kb/s over 1000 m.
This article describes a field-programmable gate array (FPGA) based multihydrophone receiver, and evaluates its real-time performance in various shallow-water channels. The receiver, built around an integer precision multichannel linear equalizer, uses the Least Mean Squares Algorithm for filter tap updates. Combined with a 64-hydrophone line array in the very high-frequency band, the receiver achieves information data rates up to 465 kb/s over 100 m, and rates up to 155 kb/s over 1000 m.
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