广东工业大学学报 ›› 2014, Vol. 31 ›› Issue (1): 59-64.doi: 10.3969/j.issn.1007-7162.2014.01.012

• 综合研究 • 上一篇    下一篇

时变信道下OFDM系统载波频偏估计算法研究

张军龙,刘立程，胡瑞   

  1. 广东工业大学 信息工程学院，广东 广州 510006
  • 收稿日期:2013-01-29 出版日期:2014-03-29 发布日期:2014-03-29
  • 作者简介:张军龙（1988-）,男，硕士研究生，主要研究方向为宽带移动通信系统理论与技术.
  • 基金资助:

    广东省自然科学基金资助项目（S2011040003956）

The Carrier Frequency Offset Estimation Algorithm for the OFDM System over the Timevarying Multipath Channel

Zhang Jun-long,  Liu Li-cheng，Hu Rui   

  1. School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2013-01-29 Online:2014-03-29 Published:2014-03-29

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摘要： 针对时变信道下OFDM系统的载波频偏估计，对现有的几类典型载波频偏估计算法的原理和步骤进行归纳总结，通过对载波频偏估计的性能仿真进行对比，分析其算法的优劣，以期为在时变信道下OFDM系统的频率同步技术的进一步研究提供有益的参考.

关键词: 正交频分复用；时变信道；载波频偏估计；导频；卡尔曼滤波

Abstract: It summarized the principles and steps of existing typical carrier frequency offset (CFO) estimation algorithms over timevarying frequencyselective channels in the OFDM system, compared these algorithms through simulation of the CFO estimation performance, and analyzed their advantages and disadvantages. The research provides a useful reference for further studies of frequency synchronization in future.

Key words: orthogonal frequency division multiplexing(OFDM); timevarying channel; corrier frequency offset(CFO) estimation; pilot ; Kalman filtering

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