| An Anti—multipath Frequency Hopped Communication Technique in Shallow—water Acoustic Channels |
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| 引用本文： | 许肖梅,Xu Fanghua,Chen Dongsheng.An Anti—multipath Frequency Hopped Communication Technique in Shallow—water Acoustic Channels[J].高技术通讯(英文版),2003,9(2):17-20. |
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| 作者姓名： | 许肖梅 Xu Fanghua Chen Dongsheng |
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| 作者单位： | DepartmentOfOceanography,XiamenUnlversity,Xiamen361005,P.R.China |
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| 基金项目： | SupportedbyFoundationforUniversityKeyTeacherbyMinistryofEducationofChinaandFujianNaturalScienceFoundationofChina(No .D0 2 10 0 0 5 ) |
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| 摘 要： | This paper introduces a frequency-hopped (FH) communication system to anti-intersymbol interferences (ISI) caused by the multipath propagation in shallow-water acoustic channels, and uses high-speed digital signal processor (DSP) and serial ADC (MAX121) chip to demodulate re-ceived signal efficiently based Fast Fourier Transform (FFT) algorithm. The field experimental results show: a data rate of 1Kbit/s with the bit error rates on the order of 10^-4 is denmnstrated at 2000 m in the shallow-water acoustic channel of Xiamen harbor, and the key techniques of the system is analyzed in the paper.
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| 关 键 词： | 跳频通信系统 浅水声信道 数字信号处理 码间干扰 抗干扰技术 |
An Anti-multipath Frequency Hopped Communication Technique in Shallow-water Acoustic Channels |
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| Xu Fanghua,Chen Dongsheng.An Anti-multipath Frequency Hopped Communication Technique in Shallow-water Acoustic Channels[J].High Technology Letters,2003,9(2):17-20. |
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| Authors: | Xu Fanghua Chen Dongsheng |
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| Abstract: | This paper introduces a frequency-hopped (FH) communication system to anti-intersymbol interferences (ISI) caused by the multipath propagation in shallow-water acoustic channels, and uses high-speed digital signal processor (DSP) and serial ADC (MAX121) chip to demodulate received signal efficiently based Fast Fourier Transform (FFT) algorithm. The field experimental results show: a data rate of 1Kbit/s with the bit error rates on the order of 10 -4 is demonstrated at 2000 m in the shallow-water acoustic channel of Xiamen harbor, and the key techniques of the system is analyzed in the paper. |
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| Keywords: | shallow-water acoustic channel frequency hopped Anti-multipath |
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