| 采用循环前缀的OFDM信道盲估计算法 |
| |
| 引用本文： | 佟卫华.采用循环前缀的OFDM信道盲估计算法[J].电子科技大学学报(社会科学版),2008(3). |
| |
| 作者姓名： | 佟卫华 |
| |
| 作者单位： | 唐山广播电视大学丰南分校 河北唐山63000; |
| |
| 摘 要： | 在无线OFDM通信系统中,信道参数估计一直备受关注。该文基于最大似然估计原理,提出了一种改进的盲信道估计算法,利用并根据循环前缀的周期平稳性来进行信道盲估计。该算法是在接收端DFT之前进行信道估计和均衡。研究和仿真表明,该算法不仅显著地减少了运算的复杂度,而且使系统性能也得到了一定程度的改善。
|
| 关 键 词： | 盲信道估计 最大似然估计 正交频分复用 |
Blind Channel Estimation Using the Cyclic Prefix for OFDM Systems |
| |
| TONG Wei-hua.Blind Channel Estimation Using the Cyclic Prefix for OFDM Systems[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2008(3). |
| |
| Authors: | TONG Wei-hua |
| |
| Institution: | TONG Wei-hua (Tangshan Radio & TV University at Fengnan Tangshan Hebei 63000) |
| |
| Abstract: | Channel estimation is a very important problem that has been paid much attention in orthogonal frequency division multiplexing (OFDM) communication system. In this paper, an improved blind OFDM channel estimation algorithm based on maximum likelihood is proposed. The improved algorithm uses the cyclic prefix (CP) processing to implement channel blind estimation. It estimates the influence of the OFDM channel before DFT. The analysis and simulation results show that the method proposed both reduces the compu... |
| |
| Keywords: | blind channel estimation maximum likelihood estimation OFDM |
| 本文献已被 CNKI 等数据库收录！ |
