Novel blind equalization algorithm for multipath fading underwater acoustic channel

被引：0
作者：
Sun, Li-Jun
Sun, Chao
机构：
[1] Inst. of Acoustic Eng., Northwestern Polytech. Univ., Xi'an 710072, China
[2] Sch. of Info. Sci. and Eng., Henan Univ. of Technol., Zhengzhou 450052, China
来源：
Xitong Fangzhen Xuebao / Journal of System Simulation | 2005年 / 17卷 / 03期
关键词：
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In underwater acoustic digital communications, two main factors which affect the performance of communication systems seriously are multipath fading and Doppler frequency shift. A blind equalizer based on fractionally-spaced decision-feedback structure, which efficiently combats the multipath fading effects of underwater acoustic channels, is discussed. Towards the time-varying Doppler underwater acoustic channels, a modified constant modulus fractionally-spaced decision-feedback equalization and second-order digital phase-locked loop combined algorithm, which can efficiently correct the channel-introduced carrier phase rotation, is proposed. Finally the performance of the proposed algorithm is compared with a constant modulus baud-spaced decision-feedback blind equalization algorithm by computer simulation, and the simulation results confirm the effectiveness of the proposed algorithm.
引用
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页码：559 / 562
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