高级搜索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

一种基于DFT的低复杂度虚子载波OFDM信道估计算法

王一蓉 周恩 王文博

王一蓉, 周恩, 王文博. 一种基于DFT的低复杂度虚子载波OFDM信道估计算法[J]. 电子与信息学报, 2007, 29(12): 2934-2937. doi: 10.3724/SP.J.1146.2006.00764
引用本文: 王一蓉, 周恩, 王文博. 一种基于DFT的低复杂度虚子载波OFDM信道估计算法[J]. 电子与信息学报, 2007, 29(12): 2934-2937. doi: 10.3724/SP.J.1146.2006.00764
Wang Yi-rong, Zhou En, Wang Wen-bo. A Low Complexity DFT Based Channel Estimation Method for OFDM Systems[J]. Journal of Electronics & Information Technology, 2007, 29(12): 2934-2937. doi: 10.3724/SP.J.1146.2006.00764
Citation: Wang Yi-rong, Zhou En, Wang Wen-bo. A Low Complexity DFT Based Channel Estimation Method for OFDM Systems[J]. Journal of Electronics & Information Technology, 2007, 29(12): 2934-2937. doi: 10.3724/SP.J.1146.2006.00764

一种基于DFT的低复杂度虚子载波OFDM信道估计算法

doi: 10.3724/SP.J.1146.2006.00764

A Low Complexity DFT Based Channel Estimation Method for OFDM Systems

  • 摘要: 该文针对采用虚子载波的OFDM通信系统,提出了一种基于DFT的低复杂度信道估计算法,并与最小二乘(Least Square,LS)估计算法和线性最小均方误差(Linear Minimum Mean Square Error,LMMSE)算法进行了详细的性能和复杂度比较。所提DFT算法较好地降低了高斯白噪声的影响,相对于LS算法获得了较大的性能增益。该算法在复杂度与性能之间取得了较好的折衷,具有很好的实用价值。
  • [1] Proakis J G. Digital Communications. Prentice-Hall, 3rd edition, 1995. [2] Wilson K R and Cioffi M. 16-QAM modulation with orthogonal frequency-division multiplexing in a Rayleigh- fading environment. In Proc. VTC, Stockholm, Sweden, 1994: 1660-1664. [3] Santella G. A frequency requency and symbol synchronization system of OFDM signals: Architecture and simulation results, IEEE Trans[J].on Veh. Technol.2000, 49:254-275 [4] Sari H, Karam G, and Jeanclaude I. Transmission techniques for digital terrestrial TV broadcasting. IEEE Commun. Mag, 1995, 33(2): 100-109. [5] Edfors O, Sandell M, and Van De Beek J J, et al.. Analysis of DFT-based channel estimators for OFDM [J].Wireless Personal Communications.2000, 12(1):55-70 [6] Yang B, Cao Z, and Letaief K B. Low-complexity channel estimator based on windowed DFT and scalar Wiener filter for OFDM systems. In Proc. IEEE ICC2001, Helsinki, 2001, vol. 6: 1643-1647. [7] Auer G, Dammann A, and Sand S. Channel estimation for OFDM systems with multiple transmit antennas by exploiting the properties of the discrete Fourier transform, personal, indoor and mobile radio communications, The 14th IEEE Proceedings on Sept. 2003, vol.2: 1954-1958. [8] Atarashi H, Abeta S, and Sawahashi M. Variable spreading factor orthogonal frequency and code division multiplexing (VSF-OFCDM) for broadband packet wireless access. IEICE Trans. Commun., 2003, E86-B (1): 291-299. [9] IST-2001-32620 MATRICE D1.3. [10] Maeda N, Atarashi H, Abeta S, and Sawahashi M. Pilot channel assisted MMSE combining in forward link for broadband OFCDM packet wireless access [J]. IEICE Trans. Commun., 2002, E85-A (7): 1635-1646.
  • 加载中
计量
  • 文章访问数:  3924
  • HTML全文浏览量:  69
  • PDF下载量:  1673
  • 被引次数: 0
出版历程
  • 收稿日期:  2006-06-01
  • 修回日期:  2006-10-19
  • 刊出日期:  2007-12-19

目录

    /

    返回文章
    返回