| 一种基于SAGE算法的OFDM系统频偏跟踪技术 |
| |
| 引用本文： | 陈磊,张海滨. 一种基于SAGE算法的OFDM系统频偏跟踪技术[J]. 信息技术, 2007, 31(2): 9-11 |
| |
| 作者姓名： | 陈磊 张海滨 |
| |
| 作者单位： | 上海交通大学无线通信技术研究所,上海,200240 |
| |
| 摘 要： | 正交频分复用系统（OFDM）的性能受限于频偏误差的影响，基于迭代方式的频偏跟踪技术可以较好地消除残余频偏，降低计算复杂度，并能够适应时变的信道参数。提出一种基于SAGE（Space-Ahemating Generalized Expectation-maximization）算法的迭代频偏跟踪方法。仿真结果表明，这种方法可以在很少的迭代次数里实现很高的估计精度，有效提高在时变信道中的接收性能。
|
| 关 键 词： | 正交频分复用 载波跟踪 SAGE算法 |
| 文章编号： | 1009-2552（2007）02-0009-03 |
| 修稿时间： | 2006-08-07 |
An iterative frequency tracking method in OFDM system based on SAGE algorithm |
| |
| CHEN Lei,ZHANG Hai-bin. An iterative frequency tracking method in OFDM system based on SAGE algorithm[J]. Information Technology, 2007, 31(2): 9-11 |
| |
| Authors: | CHEN Lei ZHANG Hai-bin |
| |
| Affiliation: | Institute of Wireless Conmmunication Technology,Shanghai Jiaotong University, Shanghai 200240, China |
| |
| Abstract: | The performance of OFDM system is degraded by frequency offset. The iterative tracking methods can eliminate the degradation effectively. A SAGE algorithm based on frequency tracking scheme is proposed in this paper. The simulation results present that the proposed algorithm achieves high precision with few iteratire time. |
| |
| Keywords: | OFDM frequency tracking SAGE algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
