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OFDM水声通信系统中一种相位补偿方法 被引量：2

Research on phase compensation in OFDM underwater acoustic communication systems
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摘要 为解决正交频分复用(OFDM)水声通信系统中因采样时钟偏差引起的相位噪声对系统性能的影响,提出了一种基于双导频符号的相位补偿方法,利用相邻两个OFDM导频符号的信道估计获得任何两个相邻OFDM符号的相位差,然后利用这个相位差去补偿OFDM数据符号中因采样时钟偏差带来的相位旋转.仿真及湖上试验数据分析结果表明:采用该方法可以有效地补偿因采样时钟偏差所带来的相位旋转,降低相位噪声对OFDM水声通信系统的影响. In orthogonal frequency division multiplexing （OFDM） underwater acoustic communication systems, the phase noise caused by sampling frequency offset would deteriorate the system performance. A phase compensation technology is proposed, which adopts the channel estimation of the two adjacent OFDM pilots to get the phase error, and then compensates the phase rotation for the OFDM data symbols with the phase error. The simulation results and the experimental results from the lake show that the phase rotation caused by sampling frequency offset can be well compensated by adopting this method, and it reduces the affect of the phase noise to the OFDM underwater acoustic communication systems.
作者 王明华 桑恩方 乔钢
机构地区 哈尔滨工程大学水声工程学院
出处 《华中科技大学学报（自然科学版）》 EI CAS CSCD 北大核心 2008年第3期73-76,共4页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词 水声通信 正交频分复用 采样时钟偏差 相位补偿 underwater acoustic communication orthogonal frequency division multiplexing sampling frequency offset phase compensation
分类号 TB567 [交通运输工程—水声工程]
  • 相关文献

参考文献5

  • 1朱彤,桑恩方.基于正交频分复用的高速水声通信技术[J].哈尔滨工程大学学报,2005,26(1):71-74. 被引量：11
  • 2朱彤.基于正交频分复用的水声通信技术研究[D].哈尔滨:哈尔滨工程大学水声工程学院,2005.
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二级参考文献6

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共引文献10

同被引文献18

  • 1马雯,黄建国,张群飞.利用线性调频脉冲进行帧同步的方法及性能[J].海洋技术,2006,25(3):86-89. 被引量：3
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引证文献2

二级引证文献13

华中科技大学学报（自然科学版）
2008年 第3期

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