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自适应OFDM采样频偏估计算法

孙宇明 张彦仲 邵定蓉 李署坚

孙宇明, 张彦仲, 邵定蓉, 等 . 自适应OFDM采样频偏估计算法[J]. 北京航空航天大学学报, 2011, 37(8): 1001-1005.
引用本文: 孙宇明, 张彦仲, 邵定蓉, 等 . 自适应OFDM采样频偏估计算法[J]. 北京航空航天大学学报, 2011, 37(8): 1001-1005.
Sun Yuming, Zhang Yanzhong, Shao Dingrong, et al. Adaptive sampling frequency offset estimation algorithm for OFDM system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 1001-1005. (in Chinese)
Citation: Sun Yuming, Zhang Yanzhong, Shao Dingrong, et al. Adaptive sampling frequency offset estimation algorithm for OFDM system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 1001-1005. (in Chinese)

自适应OFDM采样频偏估计算法

详细信息
    作者简介:

    孙宇明(1981-),男,辽宁锦州人,博士生,goodlucksunym@189.cn.

  • 中图分类号: TN 914.3

Adaptive sampling frequency offset estimation algorithm for OFDM system

  • 摘要: 修正了基于数据判决的采样频偏估计公式,提出一种自适应采样频偏估计算法,利用离散导频估计频偏变化,从而得到参与估计的数据符号间隔,并且同时使用信道估计结果和接收数据对采样频率偏差进行估计,达到提高估计精度的目的.仿真表明,在高斯白噪声信道下,新算法估计精度比基于数据判决算法和基于离散导频算法高3 dB左右;在多径信道下,新算法的估计精度比其他两种算法提高5 dB以上.实验结果表明,该算法的星座收敛速度快,提高了接收机性能.

     

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出版历程
  • 收稿日期:  2010-04-07
  • 网络出版日期:  2011-08-30

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