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一种新的PCC-OFDM盲时偏估计算法

A new blind estimation of time offset for PCC-OFDM
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摘要 提出了一种新的PCC-OFDM盲时偏估计算法,首先使时域信号包络与窗函数循环卷积,进行时偏快速粗估计,然后利用解调信号方差进行判决,获得精确的时偏估计。该算法不需要训练序列、导频信号或循环前缀。仿真结果证明,该算法估计精度高于已有的PCC-OFDM盲时偏估计算法。 A new algorithm of blind estimation of time offset is proposed for PCC-OFDM is carried out. Fast coarse estimation of time offset based on circular convolution of the signal envelop and the window function first. Then the variance of decoded signal is used to obtain the accurate estimation. No training symbols, pilot or cyclic prefix extensions are required. Simulation results show the improved precision of the proposed algorithm compared with existed algorithms.
作者 唐恬 曲仁慧 张平
机构地区 北京邮电大学电信工程学院 吉林大学
出处 《电路与系统学报》 CSCD 北大核心 2008年第4期29-32,共4页 Journal of Circuits and Systems
基金 国家自然基金项目(60496312)
关键词 多项式相消编码OFDM 盲估计 时偏 PCC-OFDM （Polynomial Cancellation Coded of OFDM） blind estimation time offset
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献5

  • 1Armstrong J. Analysis of new and existing methods of reducing inter-carrier interference due to carrier frequency offset in OFDM [J]. IEEE Transactions On Communications, 1999, 47(3).
  • 2Armstrong J, Grant P M, Povey G. Polynomial Cancellation Coding of OFDM to reduce Intercarrier interference due to Doppler spread [A]. IEEE Globeeom [C]. 1998, 8-12: 2771-2776.
  • 3Armstrong J, Shentu J, Tellambura C. Frequency domain equalization for OFDM systems with mapping of data onto sub-carrier pairs and overlapping symbol periods [A]. In: Coding Communieation and Broadeasting [C], Ed. by Farrel P G, Darnell Mike, Honary Bahram. Research Studies Press, 2000. 217-228.
  • 4Shentu Jinwen, Armstrong Jean. Blind Estimation of Time and Frequency Offset for PCC-OFDM [A]. IEEE VTC'2001 [C]. 2001-05, Rhodes, Greece.
  • 5徐志江,李式巨,官军.一种新的PCC-OFDM定时时偏盲估计[J].电路与系统学报,2003,8(4):37-41. 被引量：3

二级参考文献5

  • 1ArmStrong I. Analysis of new and existing methods of reducing inter-carrier interference due to carder frequency offset in OFDM[J], IEEE Transactions On Communications, 1999-03, 47(3)
  • 2Armstrong J, Shentu .I, Tellambura C. Frequency domain equalization for OFDM systems with mapping of data onto sub-carrier pairs and overlapping symbol periods[A]. In: Coding Communication and Broadcasting[C]. Ed. by Farrel P G, Darnell Mike, Honary Bahram. Research Studies Press, 2000: 217-228.
  • 3Armstrong J, Gill T, Tellambura C. Performance of PCC-OFDM with overlapping symbol periods in a multi-path channel[J]. IEEE Globecom,2000-12: 87-91.
  • 4Shentu Jinwen, Armstrong Jean. Blind Estimation of Time and Frequency Offset for PCC-OFDM[A]. IEEE VTC'2001[C]. 2001-05, Rhodes,Greece.
  • 5Armstrong J, Gill T S, Shentu Jinwen. Amplitude Statistics for Polynomial Cancellation Coded OFDM signals[A]. Proceedings of IEEE International Workshop on Intelligent Signal Processing and Communication Systems[C]. 1998, 1: 43-47.

共引文献2

电路与系统学报
2008年 第4期

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