摘要
本文在深入研究水声通信信道特性及多载波关键技术的基础上，设计并研制了基于MFSK的高速自适应多载波水声通信系统，并进行了湖上实验。理论分析、仿真及湖上试验结果表明：基于MFSK的多载波水声通信系统，多径抑制有效，对同步的精确度要求不高，性能稳健，更适合于恶劣水声通信环境下、中距离（10～30km）较高数据率多载波通信系统，易于工程实现，具有良好的应用前景。
After the research of UWA channel characteristic and key techniques of multicarrier system, this paper presents an optimal high speed adaptive multi-carrier UWA communication system based on the multi-frequency shift keying （MFSK） modulation. And the experiments in a lake were carried out. The theory studies, computer simulations and lake experiments show that the technique is effective in combating severe multipaths,has no exigent precision of channel synchronization ,and is more suitable for high speed multi-carrier UWA communications between 10- 30 km middle range in severe acoustic channels. The system is effective, reliable and robust and easy to be carried out in project. Consequently, The MFSK based Multi-carrier UWA communication system has a promising future in middle range UWA communication.
出处
《无线通信技术》
2006年第2期9-13,共5页
Wireless Communication Technology
基金
国家自然基金资助项目(60572098)
关键词
水声通信
多栽波
多频移键控
多径抑制
underwater acoustic communications （UWA）
multi-carrier
multi-frequency shift keying （MFSK）
multipaths restraint
