Software defined underwater acoustic communication system based on Visual C and PC
基于Visual C和PC的软件水声调制解调系统

In this paper, we present a DS/DBPSK(direct sequence spread spectrum/ differential binary phase shift keying )communication technology, which combines anti-multi-path and anti-jamming spread spectrum technology with differential phase modulation, the latter has better channel adaptation and avoid the adoption of phase recover in demodulation. Employing the double-buffer and multi-threading technology to guarantee a real-time processing, a software defined underwater acoustic modem system is designed based on Visual C++ and PC. The system is a verification experiment for DS-DBPSK technology in shallow water communication and will support underwater acoustic networks. The experimental results on sea demonstrated the effectiveness of this system.