Research on the Demodulation of the Underwater Acoustic Differential Frequency -hopping Signals Based on Adaptive Notch Filter

摘要：

The differential frequency-hopping technology is imported into the underwater communication research domain in this paper, according to the requirement of underwater target’s secure communication and safety reliability. By analyzing algorithms of G function and multi-path of received differential frequency-hopping signals, a method of demodulation based on the combination between parallel connection notch filter energy detector and Viterbi algorithm is derived. The performance of the method is validated by the results of the simulation and the lake trial. It is shown that the application of differential frequency-hopping used in the underwater acoustic communication can overcome the multi-path interferences effectively and have a good BER performance under low SNR, so it is suitable for underwater acoustic secure communications.

关键词： underwater acoustic DFH communication G function ANF Viterbi soft-decision algorithm

作者: Guangpu Zhang Youyong Liu Guolong Liang Kai Liu

作者单位: National Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin,Heilongjiang Province,China

会议类型: 国际会议

会议名称: 2010 IEEE信息与自动化国际会议(ICIA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1-4

在线出版日期: 2010-06-20（万方平台首次上网日期，不代表论文的发表时间）