Experimental Demonstration of Cyclic Shift Spread Spectrum Underwater Acoustic Communication

摘要

Aiming at the cyclic shift spread spectrum (CSSS) underwater acoustic communication technology, this paper proposes a CSSS underwater acoustic communication technology based on dual-k coding. The reliability of the communication system can be significantly improved by taking the output of the cyclic shift energy detector at the receiver as soft information for symbol by symbol statistical inference decoding. The results of data simulation and deep-sea underwater acoustic communication experiment show that the decoding gain of CSSS underwater acoustic communication system based on dual-k code is about 3 ~ 4dB higher than that of traditional methods.