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FMT系统中一种新的信道估计算法 被引量：2

A New Channel Estimation Algorithm for FMT System
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摘要 FMT(Filtered Multitone)系统不具备循环卷积的特点,无法与OFDM一样采用频域信道估计和补偿的方法。本文设计了一种训练序列,并基于序列的周期性和正交性实现了FMT的时域信道估计算法。算法在充分利用FMT接收端处理单元内的数据条件下,凭借FFT/IFFT技术可以快速地完成信道估计,获得无偏的估计值。理论分析和仿真实验均表明,算法的计算复杂度低,估计性能较好,且与周期长度无关。 FMT system had not such a characteristic of cyclic convolution that it couldn＇ t estimate and equalize the channel in its frequency domain as OFDM. To solve this question, this paper brought forward a new channel estimation algorithm, which used a training sequence with periodicity and orthogonality. The algorithm made full use of the data in a transaction cell in FMT receiver. It could esti-ate the channel fast to gain unbiased estimation in virtue of FFr/IFFT. Both theory analyse and simulation show low complexity,good estimation performance and independence on period of the sequence.
作者 金国平 丁宏 钟华 郑林华
机构地区 国防科学技术大学电子科学与工程学院
出处 《信号处理》 CSCD 北大核心 2009年第5期811-815,共5页 Journal of Signal Processing
关键词 FMT OFDM 多径 信道估计 周期序列 PN FMT OFDM muhipath channel estimation period sequence PN
分类号 TN92 [电子电信—通信与信息系统]
  • 相关文献

参考文献21

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二级参考文献25

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共引文献9

同被引文献26

  • 1CHERUBINI G,ELEFTHERIOU E,OLCER S.Filtered multitone modulation for VDSL[A].Proc IEEE Globecom'99[C].Rio de Janeiro Brazil,1999.1139-1144.
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  • 3TENELLO A M,PECILE F.Analytical results about the robusteness of FMT modulation with several prototype pulses in time-frequency selective fading channels[J].IEEE Transactions on Wireless Communications,2008,7(5):1634-1645.
  • 4FUSCO T,PETRELLA A,TANDA M.Blind CFO estimation for noncritically sampled FMT systems[J].IEEE Transactions on Signal Processing,2008,56(6):2603-2608.
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引证文献2

二级引证文献2

信号处理
2009年 第5期

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