期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

OFDM系统中一种维纳LMS信道跟踪算法 被引量：5

A Wiener LMS Channel Tracking Algorithm for OFDM Systems
下载PDF
导出
摘要 结合OFDM 系统的特点,该文讨论了维纳最小均方(WLMS)算法在OFDM 系统中应用的可行性。推导了WLMS 信道跟踪算法在OFDM 系统中的频域表达式。利用信道响应的频域相关特性,在每一次迭代过程中叠加一个频域滤波器,使算法的性能得到提高。仿真结果表明,选择合适的步长,算法误符号率性能基本接近理想估计的性能界。 Based on the property of OFDM systems, this paper discusses the feasibility of Wiener LMS algorithm in OFDM systems, and derives the frequency expression of the WLMS channel prediction algorithm for OFDM systems, The performance of the algorithm is greatly improved by using a frequency domain filter, which is derived based on the correlations of channel response in frequency domain, in each iteration. The simulation results show that the performance of uncoded Symbol Error Rate （SER） can reach the bound of ideal channel estimation at the proper step size.
作者 白宾锋 蔡跃明 徐友云
机构地区 解放军理工大学通信工程学院
出处 《电子与信息学报》 EI CSCD 北大核心 2005年第11期1699-1703,共5页 Journal of Electronics & Information Technology
基金 国家863计划(2003AA12331007)资助课题
关键词 正交频分复用 信道跟踪 维纳最小均方误差 OFDM, Channel tracking, Wiener LMS
分类号 TN914 [电子电信—通信与信息系统]
  • 相关文献

参考文献12

  • 1Bingham J A C.Multicarrier modulation for data transmission :An idea whose time has come.1EEE Communication Magazine1990,37(5):5—14.
  • 2Hoeher P, Kaiser S, Robertson I, et al.. Two-dimensional pilotsymbol-aided channel estimation by wiener filtering. International Conference on Acoustics, Speech, and Signal Processing, Munich Germany, 1997: 1845- 1848.
  • 3Y Li, et al.. Robust channel estimation for OFDM system with rapid dispersive fading channels.IEEE Transaction on Communication, 1998, 46(7): 902 - 915.
  • 4Van der Veen A, et.al.. Subspace-based signal analysis using singular value decomposition. Proc IEEE, 1993, 81(9): 1277-1308.
  • 5Cai X, Akansu A N. A subspace method for blind channel identification in OFDM systems. IEEE International Conference on Communications, New Orleans, USA, July 2000:929 - 933.
  • 6Mignone V, Morello A. CD3-OFDM: A novel demodulation scheme for fixed and mobile recivers. IEEE Trans on Communications, 1996, 44(9): 1144 - 1151.
  • 7Ahlen A, Sternad M. Wiener filter design using polynomial equations. IEEE Trans on Signal Processing, 1991, 39(11):2387 - 2399.
  • 8Lindbom L, et al.. Tracking of timing-varying mobile radio channels-Part I : The Wiener LMS algorithm, IEEE Trans on Communications, 2001,49(12): 2207 - 2217.
  • 9徐信,白宾峰,蔡跃明.无线OFDM系统中基于导频信道估计方法的性能比较[J].解放军理工大学学报（自然科学版）,2003,4(6):11-15. 被引量：6
  • 10Jakes W C. Microwave mobile communications. New York:Wiley-Interscience, 1974, chapter 1.

二级参考文献10

  • 1[1]MOON J K, CHOI S I. Performance of channel estimation methods for OFDM systems in a multipath fading channels[J]. IEEE Trans Consumer Electronics, 2000,46(1):161-170.
  • 2[2]COLERI S, ERGEN M, PURI A,et al. A study of channel estimation in OFDM systems[C]. Vancouver: IEEE 56th Vehic Tech Conf, 2002.
  • 3[3]PRATT W K. Generalized Wiener filtering computation techniques[J]. IEEE Trans Computers, 1972, C-21(7):636-641.
  • 4[4]EKSTROM M P. Realizable Wiener filtering in tow dimensions[J]. IEEE Trans Acoust, Speech Signal Proc, 1982,ASSP-30(2):31-40.
  • 5[5]HOEHER P, KAISER S, ROBERTSON P. Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering[A].In: Proc IEEE ICASSP '97[C].1997.1845-1848.
  • 6[6]HOEHER P, KAISER S, ROBERTSON P. Pilot-symbol-aided channel estimation in time and frequency[A]. In:Proc GLOBECOM '97, Commun Theory Mini-Conf[C].Phoenix:1997.90-96.
  • 7[7]EDFORS O, SANDELL M, VAN DE BEEK J J,et al. OFDM channel estimation by singular value decomposition[J]. IEEE Trans Commun, 1998,46(7):931-939.
  • 8[8]SANDELL M. Design and analysis of estimators for multicarrier modulation and ultrasonic imaging[D]. Lulea: Division of Signal Processing.1996.
  • 9[9]CAVERS J K. An analysis of pilot symbol assistedmodulation for rayleigh fading channels[J]. IEEE Trans on Vehic Tech, 1991,VT-40(4):686-693.
  • 10[10]HOEHER P. A statistical discrete-time model for theWSSUS multipath channel[J]. IEEE Trans Vehic Tech, 1992,VT-41(4):461-468.

共引文献5

同被引文献45

引证文献5

二级引证文献4

电子与信息学报
2005年 第11期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部