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基于梳状导频分布的OFDM信道估计改进算法 被引量：6

An Improved Channel Estimation Algorithm Based on Comb-type Pilot in OFDM Systems
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摘要 提出了基于梳状导频分布的OFDM信道估计的改进算法,分别在基于频域(DFT)和时域(IDFT)的迫零内插算法的基础上运用了数据翻转的思想。该算法可以大大地减少DFT/IDFT变换时所产生的边缘效应,并且通过优化边缘位置的估计性能来提升整个OFDM信道估计的精确度。仿真结果表明,该算法相比经典算法在性能上有较大提升。 A new channel estimation algorithm is proposed based on comb-type pilot in OFDM systems, which employs data-flipping in the frequency or time domain interpolation based on zero-padding and DFT/IDFT. This algorithm can significantly reduce the Gibbs phenomenon caused by DFT/IDFT, so that it can improve the OFDM estimation accuracy by optimizing the interpolation accuracy of periphery. Simulation result shows that this algorithm has a better performance compared with other classic methods.
作者 龚钢 雷维嘉 谢显中
机构地区 重庆邮电大学个人通信研究所
出处 《电讯技术》 北大核心 2011年第4期102-105,共4页 Telecommunication Engineering
基金 国家自然科技基金资助项目(60872037) 国家航天"十一五"预研项目~~
关键词 OFDM 信道估计 梳状导频 数据翻转 DFT/IDFT OFDM channel estimation comb pilot data-flipping DFT/IDFT
分类号 TN911 [电子电信—通信与信息系统] TN92 [电子电信—通信与信息系统]
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参考文献5

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共引文献6

同被引文献47

  • 1Bajwa W U, Haupt J, Sayeed A M, et al. Compressed channel sensing:A new approach to estimating sparse multipath channels[J]. Proceedings of the IEEE,2010,98(6):1058- 1077.
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  • 7Tevfik Yiieek, Hiiseyin Arslan. ICI Cancellation Based Channel Estimation for OFDM Systems[A]. Radio and Wireless Conference[C], 2003. 111- 114.
  • 8Jong- Ho Lee, Jun - Seok Yang, Seong - Cheol Kim, Yong - Wan Park. Joint Channel Estimation and Phase Noise Suppression for OFDM Systems[A]. 2005 IEEE 61st Vehicular Technology Conference - VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Fu- ture[C] ,2005. 467-470.
  • 9Kukajini Pirabakaran,R M A P. Rajatheva. Pilot 2 se- quence aided channel estimation for space time codedofdm systems[A]. Canadian Conference on Electrical and Computer Engineering,2005. 896- 899.
  • 10Yu Jung - lang,Chen Chia - hao, Lee Mei - chen. Blind channel estimation for SIMO OFDM systems without cyclic prefix[A]. International Conference on Wireless Communications, Networking and Mobile Computing [C], 2006. 22-24.

引证文献6

二级引证文献7

电讯技术
2011年 第4期

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