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

一种基于PN序列的OFDM符号频率同步方案 被引量：1

A symbol and frequency synchronization method for OFDM system based on PN sequence
下载PDF
导出
摘要 提出了一种利用PN序列构造出一种特殊的训练序列进行符号和频率同步的方案,在0,4,8,4L(L=0,1,…)的子载频上加入由PN序列调制的实数,其余子载频上加0,由此构成训练序列,利用训练序列经多载波调制后具有的特点进行符号同步估计和小数频偏估计,利用训练序列内部由PN序列建立起的差分关系估计整数频偏,仿真结果表明算法在高斯信道和多径信道下可以进行有效频率同步和符号同步。 A new synchronization method for OFDM system is put forward. The method makes use of the sequence of PN to construct a kind of special training sequence to carry out the symbol and frequency synchronization. The PN sequence modulated by real numbers was inserted in 0,4,8, ...4L（ L = 0,1 ,… ） sub - carrier frequency, the rest sub - carrier frequency was inserted in zeros. In the way, the training sequence was composed. The symbol synchronization and fraction frequency offset was estimated with the character of training sequence, the integer frequency offset was estimated with the difference relation constructed by PN sequence. The simulation results expressed that the new method can carry out the valid frequency and symbol synchronization under multi -path channel and Gauss channel.
作者 陈莉 李白萍 张晓莉
机构地区 陕西理工学院电子与信息工程系 西安科技大学通信与信息工程学院
出处 《西安科技大学学报》 CAS 北大核心 2006年第3期379-382,共4页 Journal of Xi’an University of Science and Technology
关键词 OFDM 符号同步 PN序列 频偏估计 OFDM symbol synchronization PN sequence frequency offset estimation
分类号 TN914.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献8

二级参考文献23

  • 1[1]BINGHAM J. Multicarrier modulation for data transmission: an idea whose time has come[J]. IEEE Commun Mag, May 1990, 28: 5-14.
  • 2[2]MOOSE P. A technique for orthogonal frequency division multiplexing frequency offset correction[J]. IEEE Trans on Commun, Oct 1994, 42: 2908-2904.
  • 3[3]CLASSEN F, MEYRH. Frequency synchronization algorithms for OFDM systems suitable for communication over frequency selective channels[A]. Proc VTC[C]. Stockholm, Sweden, June 1994. 1655-1659.
  • 4[4]SCHMIDL T. COXDC, Robust frequency and timing synchronization for OFDM[J]. IEEE Trans on Commun, Dec 1997, 45: 1613-1621.
  • 5[5]YHN H K, YOUNG HAHM. An efficient frequency offet estimator for timing and frequency synchronization in OFDM systems[J]. IEEE Trans on Vehicular Technology, 2001, 50(5): 580-583.
  • 6[6]SPETH M, DAECKE D, MEYR H. Minimum overhead burst synchronization for OFDM based broadband transmission[A]. Globecom'98[C]. 1998, 3227-3232.
  • 7[7]PROKIS J. Digital communications[J]. New York:McGraw-Hill,1989.
  • 8CHEN Chen, LI Jian-dong. Maximum likelihood method for integer frequency offset estimation of OFDM systems[J]. IEEE lectronics Letters, 2004,40(13): 813-814.
  • 9RICHARD van Nee, RAMJEE Prasad.OFDM for wireless multimedia communication [M]. London: Artech House, 1999.
  • 10BEEK J J, SANDAL M, BRJESSON P O.ML estimation of timing and frequency offset in OFDM systems [J]. IEEE Trans. On Signal Processing , 1997,45 (7): 1800-1805.

共引文献22

同被引文献7

  • 1王志新,李建东,陈晨,赵林靖.一种有效的OFDM符号定时和频率同步方案[J].重庆邮电学院学报（自然科学版）,2005,17(2):147-152. 被引量：10
  • 2R N Chandranath. Athaudage Ber sensitivity of OFDM systems to time synchronization error[ C]. The 8th international conference on communication systems. 2002 - 1.42 - 46.
  • 3Thierry Pollet, Mark Van Bladel, Mare Moeneclaey. Ber sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise[J]. IEEE transaction on Communications, 1995,43:191 - 193.
  • 4T M Schmidl and D C COX. Robust frequency and timing synchronization for OFDM system[ J]. IEEE Trans. Commun, Dec. 1997, 45:1613 - 1621.
  • 5H Minn, M Zeng and V K Bhargava. On timing offset estimation for OFDM system [ J ]. IEEE Commun. Lett. , Jul. 2000,4 : 242 - 244.
  • 6B Park, et al. A novel timing estimation method for OFDM systems [J]. IEEE Comm Lett, 2003,7(5) :239 -241.
  • 7P H Moose. A technique for orthogonal frequency division multi- plexing frequency offset correction [ J ]. IEEE Transactions on Communications, 1994,42:1908 - 1914.

引证文献1

二级引证文献3

西安科技大学学报
2006年 第3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