[1]王东,赵宇,王秀红.一种改进的DFT迭代的MIMO-OFDM系统信道估计算法[J].应用科技,2009,36(03):19-22.
 WANG Dong,ZHAO Yu,WANG Xiu-hong.An improved channel estimation algorithm based on DFT iteration in MIMO-OFDM systems[J].Applied science and technology,2009,36(03):19-22.
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一种改进的DFT迭代的MIMO-OFDM系统信道估计算法
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第36卷
期数:
2009年03期
页码:
19-22
栏目:
现代电子技术
出版日期:
2009-03-05

文章信息/Info

Title:
An improved channel estimation algorithm based on DFT iteration in MIMO-OFDM systems
文章编号:
1009-671X(2009)03-0019-04
作者:
王东1赵宇2王秀红1
1.哈尔滨工程大学 信息与通信工程学院,黑龙江 哈尔滨 150001;2.中国移动通信集团黑龙江省有限公司大兴安岭分公司,黑龙江 大兴安岭 165000
Author(s):
WANG Dong1 ZHAO Yu2WANG Xiu-hong1
1.College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001,China;2.Heilongjiang Branch Daxinganling,China Mobile Communication Group Co.,Ltd.,Daxinganling 165000,China
关键词:
DFT迭代MIMO?蛳 OFDM系统信道估计
Keywords:
discrete Fourier transform (DFT) iteration MIMO-OFDM systems channel estimation
分类号:
TN929.5
文献标志码:
A
摘要:
针对MIMO?蛳 OFDM 通信系统中的非整数采样信道,提出了一种基于 DFT 迭代的低复杂度信道估计算法,该算法避免了复杂的矩阵求逆运算,较好地降低了高斯白噪声的影响.与最小二乘(least square,LS)估计算法相比,该算法有较大的性能改善.同时,提出的估计算法同样适用于整数采样信道,具有很好的实用价值.
Abstract:
In view of the non-integer sampling channel in the MIMO-OFDM communication systems, a low complexity channel estimation algorithm based on DFT iteration was proposed. The proposed algorithm can reduce the Gaussian-White noise effect and avoid the complex matrix inversion operation. Compared with the Least Square estimation algorithm, this algorithm has improved the performances greatly. Besides, the proposed algorithm is suitable in the integer sampling channel as well. So, the proposed algorithm has a high practical value.

参考文献/References:

[1]JEON W G,PAIK K H,CHO S. An efficient channel estimation technique for OFDM systems with transmitter diversity [J]. IEEE Trans Commun,2001,4,E84-B: 967-974.
[2]BEEK J V,EDFORS O,SANDEL M. OFDM channel estimation by singular value decomposition [J]. IEEE Trans Commn, 1998, 46(7): 931-939.
[3]ROY S, LI Chengyang. A subspace blind channel estimation method for OFDM systems without cyclic prefix [J]. IEEE Trans on Wireless Comm, 2002, 1(4):572-579.
[4]ZHUANG Xiangyang, DING Zhi, SWINDLEHURTST A L, et al. A statistical subspace method for blind channel identification in OFDM communications[C]// Acoustics, Speech, and Signal Processing, 2000. Istanbul, Turkey, 2000: 2493-2496.
[5]苏威,潘志文. 基于DFT的OFDM系统信道估计改进算法[J].无线通信技术, 2007, 4:1-5.
[6]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
 [7]郭 漪,刘刚,葛建华. MIMO?蛳 OFDM系统中一种干扰抑制迭代信道估计算法[J].西安电子科技大学学报(自然科学版), 2008,35(2):196-200.

备注/Memo

备注/Memo:
作者简介:王东(1980-),男,硕士研究生,主要研究方向:信号处理,E-mail:wd8097@163.com.
更新日期/Last Update: 2009-03-19