| OFDM系统信道估计方法研究 |
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| 引用本文： | 路奇,归琳,方向忠. OFDM系统信道估计方法研究[J]. 电视技术, 2006, 0(9): 20-23 |
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| 作者姓名： | 路奇 归琳 方向忠 |
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| 作者单位： | 上海交通大学,图像通信研究所,上海,200240;上海交通大学,图像通信研究所,上海,200240;上海交通大学,图像通信研究所,上海,200240 |
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| 摘 要： | 分析了现有实用OFDM系统的信道估计方法及其硬件结构,并根据信道的统计特征给出了一种改进的门限滤波方法与其对应的硬件结构.在提高性能的同时,这种方法复杂度并不高,且不需要任何已知的信道统计特性.通过实验验证,这种新方法(尤其是二维的方法)明显优于传统的基于FFT的方法和最小二乘方法.
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| 关 键 词： | 信道估计 信道冲激响应 离散余弦变换 正交频分复用 门限滤波 |
| 文章编号： | 1002-8692(2006)09-0020-04 |
| 收稿时间： | 2006-07-03 |
| 修稿时间： | 2006-07-03 |
A Study of Channel Estimation Methods for OFDM Systems |
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| LU Qi,GUI Lin,FANG Xiang-zhong. A Study of Channel Estimation Methods for OFDM Systems[J]. Ideo Engineering, 2006, 0(9): 20-23 |
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| Authors: | LU Qi GUI Lin FANG Xiang-zhong |
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| Affiliation: | Institute of Image Communications and Information Processing, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | In this paper, the practical channel estimation methods and their respective hardware structures for OFDM systems are analyzed. An improved method is proposed as well as its hardware structures. The new method stems from the statistic properties of the channel impulse response and requires no prior information about the channel. With a modest complexity increase, simulation results show that the proposed method greatly outperforms the previous methods. |
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| Keywords: | channel estimation channel impulse response(CIR) discrete cosine transform (DCT) OFDM threshold filtering |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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