| 一种能有效消除水声信道相位连续旋转的分数间隔盲均衡算法研究 |
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| 引用本文： | 张银兵,赵俊渭,郭业才,孙勇.一种能有效消除水声信道相位连续旋转的分数间隔盲均衡算法研究[J].声学学报,2010,35(1):59-67. |
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| 作者姓名： | 张银兵 赵俊渭 郭业才 孙勇 |
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| 作者单位： | 1 西北工业大学航海学院 西安 710072; |
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| 基金项目： | 全国优秀博士学位论文作者专项基金，国家自然科学基金 |
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| 摘 要： | 针对信道均衡过程中的均衡器输出相位连续旋转问题,提出一种带有二阶数字锁相环的分数间隔超指数迭代盲均衡算法。该算法利用分数间隔超指数迭代算法加强对信道多途的抑制,利用二阶数字锁相环消除均衡器输出信号连续相位旋转,从而实现对原始发射信号的正确恢复。水池实验结果表明:该算法相对于常规盲均衡算法,收敛速度快,剩余均方误差小,能够有效地消除均衡器输出信号相位连续旋转,从而降低水声通信系统的误码率。
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| 关 键 词： | 迭代算法 间隔条 算法性能 盲均衡器 数字锁相环 水声信道 盲均衡算法 相位旋转 相位连续 算法研究 |
| 收稿时间： | 2008-11-17 |
A fractionally-spaced blind equalization algorithm for eliminating continuous phase rotation of underwater acoustic channel |
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| ZHANG Yinbing,ZHAO Junwei,Guo Yecai,SUN Yong.A fractionally-spaced blind equalization algorithm for eliminating continuous phase rotation of underwater acoustic channel[J].Acta Acustica,2010,35(1):59-67. |
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| Authors: | ZHANG Yinbing ZHAO Junwei Guo Yecai SUN Yong |
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| Institution: | 1. College of Marine Engineering, Northwestern Polytechnical University Xi'an 710072;2 College of Electronic and Information Engineering, Nanjing University of Information Science & Technology Nanjing 210044 |
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| Abstract: | To solve the problem of continuous phase rotation of the equalizer output during the process of channel equalization,a fractionally-spaced super-exponential iteration(FSSEI) algorithm with second order digital phase-locked loop(DPLL2) is proposed.The proposed algorithm realizes the transmitted sequence recovery by utilizing FSSEI algorithm to restrain the multi-path effect and using DPLL2 to eliminate continuous phase rotation of the equalizer output.The results of tank experiments show that the proposed al... |
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