Abstract
Software-defined acoustic modems (SDAMs) for underwater communication and networking have been an important research topic due to their flexibility and programmability. In this paper, we propose a reconfigurable platform for SDAMs based on the TI AM5728 processor, which integrates dual-core ARM Cortex-A15 CPUs and two TI C66x DSP cores. The signal processing and A/D, D/A for physical-layer communication are implemented in the DSP cores. The networking protocols and the application programs are implemented in the ARM cores. The proposed platform has the following characteristics: (1) Due to the high-performance dual-ARM cores, the whole NS3 network simulator can be run in the ARM cores. Network protocols developed in a software simulation platform (e.g., NS3 platform) can be seamlessly migrated to a hardware platform without modification. (2) A new physical-layer module associated with real acoustic channel is developed, such that a data packet generated from the application layer will be transmitted through a real acoustic channel. The results of networking experiments with five nodes are presented to demonstrate the effectiveness of the proposed platform.
Highlights
Marine resource exploitation is receiving increased attention
Marine resource exploitation is inseparable from the support of underwater communication networks
From theoretical research to practical application, underwater acoustic communication technology can be divided into three stages: (1) software simulation, (2) hardware emulation, and (3) experiments and sea tests [2,3]
Summary
Marine resource exploitation is receiving increased attention. marine activities have gradually expanded from shallow-water areas to deep ocean areas. Sensors 2019, 19, 5168 reconfigurable underwater acoustic communication platforms mainly focused on the physical layer These systems are usually composed of a DSP chip (signal processing module) and a FPGA chip (DA/AD module). Demirors et al [8] applied a General-Software-defined Radio Peripheral (USRP) to implement the whole set of communication networking systems from physical layer to network layer Another common architecture is ARM + DSP dual-core architecture, where the ARM core manages the networking protocols and the peripheral device and the DSP core takes charge of the underwater communication programs [9]. ARM cores host the networking protocols and extended peripheral drivers (GPS system, remote wireless communication module, etc.), so the platform can run the complete NS3 based on the LINUX system with external memory. The proposed SDAM platform has high integrity and high scalability, and the multiple peripheral devices can be accessed to ARM core to expand the platform functionality
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
