Frame (networking)

Channel (broadcasting)

Geology

Chip

Communications system

Modulation (music)

Aesthetics

Oceanography

Engineering

Philosophy

Underwater acoustic communication

Embedded system

Demodulation

Electronic engineering

STM32

Synchronization (alternating current)

Computer science

Computer hardware

Underwater acoustics

Transmission (telecommunications)

Telecommunications

Underwater

IEEE Embedded Systems Letters

Underwater acoustic communication (UAC) modem is an important infrastructure of underwater network construction. In recent years, with the performance improvement of the STM32 processor, the realization of reliable UAC through high-performance STM32 processor is conducive to reduce the system power consumption, cheapen the hardware cost, and ease the development difficulty. In this letter, we propose an embedded UAC system with the STM32H743 processor as the core and the peripheral sending/receiving circuit as the signal conditioning circuit module. The system can support a variety of modulation and demodulation methods, including single/multi-carrier frequency-shift keying and orthogonal frequency division multiplexing. Furthermore, in order to reduce the computational cost of the system, a fast and robust frame synchronization algorithm based on the segmented fast Fourier transform is applied. The sea trials show that the system can realize the reliable UAC transmission of 100 b/s-1 kb/s in the distance of 5-8 km in the shallow water area.

A General Embedded Underwater Acoustic Communication System Based on Advance STM32