| 一种频域OFDM系统载波频偏估计方法 |
| |
| 引用本文： | 刘月欣,费聚锋. 一种频域OFDM系统载波频偏估计方法[J]. 长沙通信职业技术学院学报, 2015, 0(2): 24-27. DOI: 10.3969/j.issn.2095-7661.2015.02.007 |
| |
| 作者姓名： | 刘月欣 费聚锋 |
| |
| 作者单位： | 1. 上海贝尔软件有限公司,上海,201206;2. 上海无线电设备研究所,上海,200090 |
| |
| 摘 要： | 针对现有载波频偏估计算法存在复杂度高、频率估计精度差、估计结果均方误差大等缺点，提出了一种低复杂度的多导频频偏联合估计算法。该算法采用恒包络零自相关的CAZAC序列作为导频序列，运用最大似然法，迭代法进行载波频偏估计。仿真结果表明，相比于传统的载波频偏估计算法，文章算法复杂度低，具有更好的载波频偏估计性能。
|
| 关 键 词： | OFDM 载波频偏 AWGN 多径 |
A carrier frequency offset estimation algorithm for OFDM |
| |
| LIU Yue-xin,FEI Ju-feng. A carrier frequency offset estimation algorithm for OFDM[J]. Journal of Changsha Telecommunications and Technology Vocational, 2015, 0(2): 24-27. DOI: 10.3969/j.issn.2095-7661.2015.02.007 |
| |
| Authors: | LIU Yue-xin FEI Ju-feng |
| |
| Affiliation: | LIU Yue-xin;FEI Ju-feng;Alcatel-Lucent Shanghai Bell Co., Ltd.;Shanghai Radio Equipment Research Institute; |
| |
| Abstract: | Joint Pilots estimation of the carriers frequency offsets of OFDM system with computationally efficiency is developed to overcome the drawbacks such as high complexity,poor frequency estimation performance of single pilot estimation and significant mean square errors deviation of the estimate results. With the constant amplitude zero autocorrelations (CAZAC) sequence as the pilot sequence,the CFO is calculated by using the maximum likelihood method and iterative algorithm. Numerical simulations indicates that the proposed low complexity CFO estimation outperforms standard CFO estimation methods in terms of accuracy and computationally efficiency compared to the traditional estimation algorithm. |
| |
| Keywords: | OFDM carrier frequency offset AWGN multipath |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
