全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

上行MIMO-OFDMA系统的频偏和信道联合估计算法

DOI: 10.13190/jbupt.200803.76.jiangzh, PP. 76-79

Keywords: 载波频偏,信道估计,粒子滤波器.

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对上行多输入多输出-正交频分多址(MIMO-OFDMA)系统,提出了一种基于粒子滤波的信道响应和载波频偏联合估计算法.首先对信道响应和载波频偏分别采用自回归(AR)和正则化自回归(GAR)模型进行建模,然后利用Rao-Blackwellization理论降低粒子滤波算法的计算复杂度,载波频偏通过粒子滤波算法进行估计,而信道冲激响应则通过卡尔曼滤波更新获得.仿真结果表明,提出的改进算法可以获得比传统粒子滤波算法更低的误块率性能,而算法的复杂度仅略有提高.

References

[1]  Zhao P, Kuang L. Carrier frequency offset estimation using extended Kalman filter in uplink OFDMA systems//ICC 2006. Istanbul: Turkey, 2006: 2870-2874.
[2]  Kim K J, Iltis R A. Frequency offset synchronization and channel estimation for the MIMO-OFDM system using Rao-Blackwellized Gauss-Hermite filter//WCNC 2006. Las Vegas: USA, 2006: 860-865.
[3]  Kim K J, Iltis R A. A sequential Monte-Carlo Kalman filter based frequency offset and channel estimation method in the MIMO-OFDM system//VTC 2005-Fall. Dallas: , 2005: 277-281.
[4]  Murphy K, Russell S. Rao-Blackwellized particle filtering for dynamic Bayesian networks[M]. New York: Springer-Verlag, 2001: 587-633.
[5]  Choi S, Cichocki A, Amari S. Flexible independent component analysis[J]. Journal of VLSI Signal Processing, 2000, 26(1): 25-38.
[6]  苏环, 张建华, 张平. OFDMA上行多用户交织信号同步与分离[J]. 北京邮电大学学报, 2006, 29(4): 115-118. Su Huan, Zhang Jianhua, Zhang Ping. OFDMA uplink multi-user interleaving signal synchronization and separation[J]. Journal of Beijing University of Posts and Telecommunications, 2006, 29(4): 115-118.
[7]  Park S, Choi S. Rao-Blackwellized particle filter for sequential speech enhancement//IJCNN 2006. Vancouver: , 2006: 1254-1259.
[8]  IEEE Std 802.16e-2005 and IEEE Std 802.16-2004/Cor1—2005, IEEE standard for local and metropolitan area networks-Part 16: Air interface for fixed and mobile broadband wireless access systems-amendment 2: physical and medium access control layers for combined fixed and mobile operation in licensed bands[S]. New York: , 2006.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133