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  1. (1.西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安 710071;2.加拿大通信研究中心,Carling Ave Box 11490, Station H, Ottawa, ON K2H 8S2 Canada;3.西安通信学院,陕西 西安 710106)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-04-20 发布日期:2007-04-20

Frequency offset and channel estimation in the MSE-OFDM system

TIAN Bin1;LI Yuan-ying1;WANG Xian-bin2, YI Ke-chu1;ZHANG Wei-dong3

  1. (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi′an 710071,China;
    2. Communications Research Centre of Canada, Carling Ave Box 11490, Station H, Ottawa, ON K2H 8S2 Canada;3. Xi′an Institute of Communications, Xi′an 710106, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-04-20 Published:2007-04-20

摘要: 在OFDM系统重复结构频偏估计的基础上,提出了基于多符号封装正交频分复用(MSE-OFDM)重复结构的大范围频偏估计方法;基于最大似然准则的时域信道估计方法和训练序列的峰均比尽可能小的条件,找到了一种时域峰平比恒定、频域比较平坦的MSE-OFDM信道估计用的训练序列.仿真结果表明,所提出的信道和频偏估计方法有效地提高了系统性能且训练序列时频域均比较平坦.

关键词: MSE-OFDM, 信道估计, 最大似然准则, 频偏估计, 训练序列

Abstract: Based on frequency-offset estimation for the OFDM system, a frequency-offset estimation technique for the Multi-symbol encapsulated OFDM system utilizing the repetitive signal structure to enlarge the estimation range is implemented. The channel estimation method based on the maximum likelihood principle is proposed, in which the training sequence has a relatively flat spectrum and constant peak to average ratio(PAR). Simulation results indicate that the proposed frequency offset and channel estimation methods are feasible for the MSE-OFDM system and improve its performance with a training sequence flat in the time and frequency domain.

Key words: MSE-OFDM, channel estimation, maximum likelihood principle, frequency offset estimation, training sequence


  • TN911.3