| 基于OFDM信号周期平稳特性的盲信道估计算法 |
| |
| 引用本文： | 郭里婷, 朱近康. 基于OFDM信号周期平稳特性的盲信道估计算法[J]. 电子与信息学报, 2006, 28(2): 198-202. |
| |
| 作者姓名： | 郭里婷 朱近康 |
| |
| 作者单位： | 中国科学技术大学个人通信与扩频实验室,合肥,230027;中国科学技术大学个人通信与扩频实验室,合肥,230027 |
| |
| 基金项目： | 中国科学院资助项目;中南大学校科研和教改项目 |
| |
| 摘 要： | 该文提出一种基于信号周期平稳特性的盲信道估计算法，用于频率选择性衰落环境下的正交频分复用(OFDM)系统。该算法利用OFDM信号本身具有的周期平稳特性以及其周期自相关函数值的能量分布规律，确定信道阶数，并通过确定信道零点的方法间接获得信道冲激响应。理论和仿真结果表明，与其它的盲信道估计算法相比，该算法不仅可以较准确地获得信道阶数，而且降低了信道估计的均方误差。
|
| 关 键 词： | OFDM 周期平稳特性 盲信道估计 |
| 文章编号： | 1009-5896（2006）02-0198-05 |
| 收稿时间： | 2004-08-01 |
| 修稿时间： | 2004-12-23 |
A Cyclostationarity-Based Approach to Blind Channel Identification for an OFDM System |
| |
| Guo Li-ting, Zhu Jin-kang. A Cyclostationarity-Based Approach to Blind Channel Identification for an OFDM System[J]. Journal of Electronics & Information Technology, 2006, 28(2): 198-202. |
| |
| Authors: | Guo Li-ting Zhu Jin-kang |
| |
| Affiliation: | PCN&SS Lab, University of Science and Technology of China, Hefei 230027, China |
| |
| Abstract: | An approach, which exploits the cyclostationarity of the received signal, to blind channel identification for an OFDM system in frequency selective channel is presented in this paper. First, by utilizing the power distribution of the cyclic autocorrelation function of the received signal, the order of the channel is achieved. Then, the estimated channel is got by identifying its zeros. Finally, simulation results are provided to show that it is superior to the other algorithms. |
| |
| Keywords: | OFDM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
|
点击此处可从《电子与信息学报》下载全文 |
|
