西安理工大学学报2012，Vol.28Issue(4)：478-483,6.
水声自适应混沌概率跳频通信方法研究
Adaptive Chaotic Probabilistic Frequency Hopping Method for Underwater Acoustic Communication System
摘要
Abstract
In order to improve reliability and security of underwater acoustic (UWA) frequency hopping (FH) communication system, a novel adaptive chaotic FH method is suggested. In this method, bit error rates (BER) of all FH channels are mapped into a probability density function (PDF) through a channel mapping function. Channel usage rates of all sub-frequencies are then distributed based on the mapped PDF. Random FH sequence, which meets the mapped PDF, is generated based on a chaotic key sequence and a specific random generator. FH pattern is produced by the random FH sequence, and is used by FH system. The simulation results show that compared with traditional chaotic FH and adaptive FH methods, the proposed method has lower BER, as demonstrated by simulations. Furthermore, it features higher security.关键词
水声通信/自适应跳频/概率映射/混沌Key words
underwater acoustic communications/ adaptive frequency hopping/ probabilistic mapping/ chaos分类
信息技术与安全科学引用本文复制引用
姜喆,王海燕,杨晓文,赵瑞琴..水声自适应混沌概率跳频通信方法研究[J].西安理工大学学报,2012,28(4):478-483,6.基金项目
国家自然科学基金资助项目(60972153,51249005) （60972153,51249005）
教育部博士点基金项目(20106102120013,20096102110038) （20106102120013,20096102110038）
西北工业大学基础研究基金项目(NPU-FFR-JC201004). （NPU-FFR-JC201004）
