| 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,(5):393~396 |
| 一种低复杂度的正交频分复用水声信道估计方法 |
| Low-complexity channel estimation in high speed OFDM underwater acoustic communication |
| 投稿时间：2005-10-28 修订日期：2006-02-23 |
| DOI： |
| 中文关键词: 水声通信 正交频分复用 信道估计 广义平稳非相关散射 |
| 英文关键词: underwater acoustic OFDM channel estimation wide-sense stationary uncorrelated scattering |
| 基金项目:国家“863”基金(863-818-09-09);“十五”国防预研基金(10106050302)项目 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| Underwater acoustic environment is a particularly hostile communication channel with severe 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. |
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