【作者】 肖沈阳； 刘胜兴；

【Author】 XIAO Shen-yang;LIU Sheng-xing;Department of Applied Ocean Physics and Engineering,Xiamen University;Key Laboratory of Underwater Acoustic Communication and Marine Information Technology,Ministry of Education,Xiamen University;

【机构】 厦门大学应用海洋物理与工程系； 厦门大学水声通信与海洋信息技术教育部重点实验室；

【摘要】 水下语音通信无论在军事还是民用上均有重要的应用价值。本文采用WT600A声码器和水声FH-MFSK调制通信技术,基于DSP设计并实现了一种的低速率水声数字语音通信系统。水池实验表明该系统在水声信道中具有较强的抗多径干扰能力。在较低信噪比下可以获得小于10^-5的误比特率,接收端合成的语音有较高的可懂度、自然度和清晰度。更多还原

【Abstract】 Underwater voice communication is very important in military affairs and civil areas.A low-rate DSP-based underwater acoustic digital voice commumcation system was investigated and implemented by using WT600A Vocoder and underwater acoustic FH-MFSK modulation communication technique.Pool experiments show that the system has the strong ability to anti-multipath over underwater acoustic channels.Bit error rate of the system is less than 10"5 at low signal to noise ratio.Furthermore,the system has achieved natural voice quahty and good speech intelligibility when the speech parameters extracted from WT600A are transmitted in the underwater acoustic channel.更多还原