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| 一种低复杂度的正交频分复用水声信道估计方法 | |
| 引用本文： | 邓红超,蔡惠智,胡捍英.一种低复杂度的正交频分复用水声信道估计方法[J].声学技术,2006,25(5):393-396. |
| 作者姓名： | 邓红超 蔡惠智 胡捍英 |
| 作者单位： | 1. 中国科学院声学研究所,北京,100080;解放军信息工程大学通信工程系,郑州,450002 2. 中国科学院声学研究所,北京,100080 3. 解放军信息工程大学通信工程系,郑州,450002 |
| 基金项目： | 国家“863”基金(863-818-09-09)，“十五”国防预研基金(10106050302)项目 |
| 摘 要： | 高可靠性、低复杂度的信道估计是实现正交频分复用(OFDM)数据通信的必要前提。由于水声信道是时间、频率高度散射的信道,传统的基于维纳滤波的信道估计复杂度过高,参考无线信道的广义平稳非相关散射(WSSUS)模型,本文提出了一种基于最小均方误差(MMSE)准则的低复杂度OFDM水声信道估计方案,其运算复杂度明显降低,并被实际实验证明是可行、有效的。 |
| 关 键 词： | 水声通信 正交频分复用 信道估计 广义平稳非相关散射 |
| 文章编号： | 1000-3630（2006）-05-0393-04 |
| 收稿时间： | 2005-10-28 |
| 修稿时间： | 2005-10-282006-02-23 |
Low-complexity channel estimation in high speed OFDM underwater acoustic communication |
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| DENG Hong-chao,CAI Hui-zhi and HU Han-ying.Low-complexity channel estimation in high speed OFDM underwater acoustic communication[J].Technical Acoustics,2006,25(5):393-396. | |
| Authors: | DENG Hong-chao CAI Hui-zhi and HU Han-ying |
| Affiliation: | 1. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China; 2. Department of Communication Engineering, Informational Engineering University of PLA, Zhengzhou 450002, China |
| Abstract: | Underwater acoustic environment is a particularly hostile communication channel with sev-ere time and frequency selectivity.In order to achieve reliable OFDM communications,reliable and low-complexity channel estimation is necessary.However conventional estimate schemes based on Winner filter are complicated.This paper proposes a low-complexity channel estimation using mini-mum mean-squared error(MMSE) principle under the assumption of underwater acoustic wide-sense stationary uncorrelated scattering(WSSUS) channel model.The computational complexity is much lower.It is applicable in practical lake experiments. |
| Keywords: | underwater acoustic OFDM channel estimation wide-sense stationary uncorrelated scattering |
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