Research on M-ary spread spectrum communication system in ice-covered water based on energy monitoring technology

Abstract

The acoustic channel in ice-covered water largely limits the transmission capacity and performance of the communication signals. Spread spectrum systems have stable performance and strong resistance to multipath interference, which can effectively cope with the interference caused by the ocean environment on signal propagation. Nevertheless, traditional direct-sequence spread spectrum systems have a low communication rate. This paper focuses on the research of an M-ary spread spectrum communication system in ice-covered water based on energy monitoring technology. It explores a robust underwater acoustic communication system that can exponentially improve information transmission capacity and bandwidth utilization. The communication encoding mode is validated in an ice-covered underwater acoustic outfield experiment, achieving zero error code transmission. The experiment verifies the feasibility of the communication system and algorithm.