| 基于同步导频复用技术的OFDM水声通信 |
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| 引用本文： | 陈阳,张艺朦,陈凯,赵安邦.基于同步导频复用技术的OFDM水声通信[J].华中科技大学学报(自然科学版),2011(8):80-83. |
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| 作者姓名： | 陈阳 张艺朦 陈凯 赵安邦 |
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| 作者单位： | 哈尔滨工程大学水声技术重点实验室;广东湛江91388部队; |
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| 基金项目： | 国家自然科学基金资助项目(60802060); 中央高校基本科研业务费专项资金资助项目(F030102); 海洋公益性行业科研专项经费资助项目(gz2010001); 哈尔滨工程大学水声技术重点实验室基金资助项目(9140C2002010902) |
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| 摘 要： | 针对正交频分复用水声通信中,为实时同步和多普勒补偿而频繁加入辅助数据使通信速率降低的问题,通过设置导频的相位和幅度,把导频转变为首尾相位连续的线性调频信号,该方法使同步与导频复用,同时可以进行多普勒估计,从而节省了额外加入线性调频信号所占用的时间.湖上试验结果表明:系统通信速率为0.25 bit/(s.Hz),未经纠错编码的最低误码率为2.68%,验证了该方法的可行性和有效性.
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| 关 键 词： | 水声通信 正交频分复用(OFDM) 同步导频复用 线性调频信号 通信速率 |
Synchronization and pilot reusing technology for OFDM in underwater acoustic communication |
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| Chen Yang Zhang Yimeng Chen Kai, Zhao Anbang.Synchronization and pilot reusing technology for OFDM in underwater acoustic communication[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(8):80-83. |
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| Authors: | Chen Yang Zhang Yimeng Chen Kai Zhao Anbang |
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| Institution: | Chen Yang1 Zhang Yimeng1 Chen Kai1,2 Zhao Anbang1(1 Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001,China,2 PLA Unit 91388,Zhanjiang 524022,Guangdong China) |
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| Abstract: | Information rate will be limited due to the aiding datas frequently added for synchronization and Doppler estimation in real time for orthogonal frequency division multiplexing(OFDM) systems in underwater acoustic communication.Thus,an algorithm was proposed in which pilot was transformed to linear frequency modulated(LFM) signal via setting the phase and amplititude of every subcarrier to make phases at the head and the tail continuous in temporally.Pilot-aided channel estimation was reused with synchroniz... |
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| Keywords: | underwater acoustic communication orthogonal frequency division multiplexing synchronization and pilot reusing linear frequency modulated signal information rate |
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