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一种降低OFDM移动通信系统中LS信道估计均方误差的算法

李国松 周正欧

李国松, 周正欧. 一种降低OFDM移动通信系统中LS信道估计均方误差的算法[J]. 电子与信息学报, 2005, 27(9): 1454-1458.
引用本文: 李国松, 周正欧. 一种降低OFDM移动通信系统中LS信道估计均方误差的算法[J]. 电子与信息学报, 2005, 27(9): 1454-1458.
Li GuoSong, Zhou ZhengOu. An Algorithm to Reduce MSE of LS Channel Estimation in Mobile OFDM System[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1454-1458.
Citation: Li GuoSong, Zhou ZhengOu. An Algorithm to Reduce MSE of LS Channel Estimation in Mobile OFDM System[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1454-1458.

一种降低OFDM移动通信系统中LS信道估计均方误差的算法

An Algorithm to Reduce MSE of LS Channel Estimation in Mobile OFDM System

  • 摘要: 在基于OFDM的移动通信系统中,针对LS信道估计时域结果的构成特点,同时结合无线信道冲激响应在时域为有限持续长度的特性,提出一种新的算法估计信道有效阶数,然后利用该估计值对LS信道估计时域结果进行加窗处理以减小LS算法中由噪声和子信道间干扰引起的均方误差:LS算法性能的提高及其对系统误符号性能的改善通过计算机仿真得以验证.
  • Wu Song-ping.[J].Bar Ness Y. OFDM channel estimation in the presence of frequency offset and phase noise. ICC 03 IEEE International Conference on Communications, 11-15 May.2003,:-[2]Coleri Sinem, Ergen Mustafa, Puri Anuj, Bahai Ahmad. Channel estimation techniques based on pilot arrangement in OFDM systems[J].IEEE Trans. on Broadcasting.2002, 48(3):223-[3]李国松,周正欧.固定波形时间保护间隔OFDM系统循环卷积特性研究.信号处理,2004,20(1):35-39.[4]Li Y, Seshadri N, Ariyavisitakul L. Channel estimation for OFDM systems with transmitter diversity in mobile wireless channel[J].IEEE J. on Select. Areas Comm.1999, 17:461-[5]Xie Yong-zhe, Georghiades C N. Two EM-type channel estimation algorithms for OFDM with transmitter diversity[J].IEEE Trans. on Comm.2003, 51(1):106-[6]Zhao Yu-ping; Huang Ai-ping. A novel channel estimation method for OFDM mobile communication systems based on pilot signals and transform-domain processing. IEEE 47th VTC,4-7, May, 1997, vol.3:2089 - 2093.[7]Roy S, Li Cheng-yang. A subspac e blind channel estimation method for OFDM systems without cyclic prefix[J]., IEEE Trans.on Wireless Comm.2002, 1(4):572-579[8]Liavas Athanasios P, Regalia Phillip A, Delmas Jean-Pierre.Blind channel approximation: effective channel order determination[J].IEEE Trans. on Signal Processing.1999, 47(12):3336-[9]Li Y, Cimini L J, Sollenberger N R. Robust channelestimation for OFDM systems with rapid dispersive fading channels[J].IEEE Trans. on Comm.1998, 46(7):902-[10]刘福声,罗鹏飞.统计信号处理.长沙:国防科技大学出版社,1999:第8章.[11]陆璇.数理统计基础.北京:清华大学出版社,1998,附录V.
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出版历程
  • 收稿日期:  2004-04-12
  • 修回日期:  2005-02-07
  • 刊出日期:  2005-09-19

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