吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (01): 253-258.doi: 10.13229/j.cnki.jdxbgxb201401041

• 论文 • 上一篇    下一篇

基于伪随机后缀的OFDM信道估计方法

崔金, 张波, 张彦仲   

  1. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2013-05-23 出版日期:2014-01-01 发布日期:2014-01-01
  • 作者简介:崔金（1986-），男，博士研究生.研究方向：无线通信，信号处理.E-mail：cuijintiger@163.com
  • 基金资助:

    “863”国家高技术研究发展计划项目（2011AA120501）；国家自然科学基金项目（61171070）.

OFDM channel estimation based on pseudo random postfix

CUI Jin, ZHANG Bo, ZHANG Yan-zhong   

  1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
  • Received:2013-05-23 Online:2014-01-01 Published:2014-01-01

RICH HTML

0   

PDF (PC)

227

摘要：

提出了一种基于伪随机后缀的正交频分复用（Orthogonal frequency division multiplexing，OFDM）系统模型，并针对其在缓变信道下的信道估计需求，提出了一种基于一阶统计的信道估计方法和利用广义循环矩阵对角化性质的均衡方法。在高斯白噪声（Additive-white-Gaussian-noise，AWGN）信道、频率选择性衰落信道和多普勒信道下，对误码率性能进行了仿真分析。仿真结果表明：该方法适合缓变信道，其误码率性能优于传统插入导频的循环前缀（Cyclic prefix，CP）-OFDM；但对于多普勒信道其性能会变差。

关键词: 通信技术, 正交频分复用, 信道估计, 伪随机后缀, 循环矩阵

Abstract:

A new model of orthogonal Frequency Division Multiplexing (OFDM) system based on pseudo-random-postfix was proposed. In view of the requirements of channel estimation under slow time-varying channel, a channel estimation method based on first-order statistics and a low-complexity equalization using the property of circular matrix diagonalization were proposed. The performance of Bit-Error-Rate (BER) was simulated and analyzed under the Additive-White-Gaussian-Noise (AWGN) channel, frequency selective fading channel and Doppler channel. The simulation results show that the proposed method can be applied to the slowly time-varying channels, such as the slow-moving case, and can achieve better BER performance than the traditional Cyclic Prefix (CP)-OFDM. However, the performance may get worse for the Doppler scenarios.

Key words: communications, orthogonal frequency division multiplexing (OFDM), channel estimation, pseudo random postfix, circulant matrix

中图分类号: 

  • TN929.5

[1] Cui Tao, Tellambura C. OFDM channel estimation and data detection with superimposed pilots[J]. European Transactions on Telecommunications, 2011, 22(3):125-136.

[2] Kalashnikov K S, Shakhtarin B I. Estimation and compensation for the influence of interchannel interference in reception of OFDM signals[J]. Journal of Communications Technology and Electronics, 2013, 58(3):208-216.

[3] Hao Li-hong, Li Guang-jun, Yang Hai-fen. Blind channel estimation for cyclic-prefixed single-carrier systems with repetition scheme[J]. AEU-International Journal of Electronics and Communications, 2010, 64(9):874-879.

[4] Wang Yung-yi, Hu Hsu-jah, Chen Yen-lin. On the ICI mitigation in OFDM systems by using the segment-based QR decomposition[J]. IEICE Transactions on Communications, 2012, 95(5): 1878-1881.

[5] Kim K J, Tsiftsis T A. Performance analysis of QRD-based cyclically prefixed single-carrier transmissions with opportunistic scheduling[J]. IEEE Transactions on Vehicular Technology, 2011, 60(1):328-333.

[6] Chen Yi-sheng. Semiblind channel estimation for MIMO single carrier with frequency-domain equalization systems[J]. IEEE Transactions on Vehicular Technology, 2010, 59(1):53-62.

[7] Wan Feng, Zhu Wei-ping, Swamy M N S. Semiblind sparse channel estimation for MIMO-OFDM systems[J]. IEEE Transactions on Vehicular Technology, 2011, 60(6):2569-2582.

[8] Konstantinidis S, Freear S. Performance analysis of Tikhonov regularized LS channel estimation for MIMO OFDM systems with virtual carriers[J]. Wireless Personal Communications, 2012, 64(4): 703-717.

[9] Manasseh E, Ohno S, Nakamoto M. Combined channel estimation and PAPR reduction technique for MIMO-OFDM systems with null subcarriers[J]. EURASIP Journal on Wireless Communications and Networking, 2012(1): 1-15.

[10] Gupta P, Mehra D K. Simplified semi-blind channel estimation for space-time coded MIMO-OFDM systems[J]. Wireless Personal Communications, 2012, 62(3):497-515.

[11] Ma Yi, Yi Na, Tafazolli R. Channel estimation for PRP-OFDM in slowly time-varying channel: first-order or second-order statistics?[J]. Signal Processing Letters, IEEE, 2006, 13(3):129-132.

[12] Muquet B, Wang Zheng-dao, Giannakis G B, et al. Cyclic prefixing or zero padding for wireless multicarrier transmissions?[J]. IEEE Transactions on Communications, 2002, 50(12):2136-2148.

[13] Muquet B, De Courville M, Duhamel P. Subspace-based blind and semi-blind channel estimation for OFDM systems[J]. IEEE Transactions on Signal Processing, 2002, 50(7):1699-1712.

[14] Mousa A, Mahmoud H. Reducing ICI effect in OFDM system using low-complexity Kalman filter based on comb-type pilots arrangement[J]. International Journal of Communication Systems, 2011, 24(1): 53-61.

[15] 陈景良, 陈向晖. 特殊矩阵[M]. 北京:清华大学出版社, 2001:372-376.
[1] 周彦果,张海林,陈瑞瑞,周韬. 协作网络中采用双层博弈的资源分配方案[J]. 吉林大学学报(工学版), 2018, 48(6): 1879-1886.
[2] 孙晓颖, 扈泽正, 杨锦鹏. 基于分层贝叶斯网络的车辆发动机系统电磁脉冲敏感度评估[J]. 吉林大学学报(工学版), 2018, 48(4): 1254-1264.
[3] 董颖, 崔梦瑶, 吴昊, 王雨后. 基于能量预测的分簇可充电无线传感器网络充电调度[J]. 吉林大学学报(工学版), 2018, 48(4): 1265-1273.
[4] 牟宗磊, 宋萍, 翟亚宇, 陈晓笑. 分布式测试系统同步触发脉冲传输时延的高精度测量方法[J]. 吉林大学学报(工学版), 2018, 48(4): 1274-1281.
[5] 丁宁, 常玉春, 赵健博, 王超, 杨小天. 基于USB 3.0的高速CMOS图像传感器数据采集系统[J]. 吉林大学学报(工学版), 2018, 48(4): 1298-1304.
[6] 陈瑞瑞, 张海林. 三维毫米波通信系统的性能分析[J]. 吉林大学学报(工学版), 2018, 48(2): 605-609.
[7] 张超逸, 李金海, 阎跃鹏. 双门限唐检测改进算法[J]. 吉林大学学报(工学版), 2018, 48(2): 610-617.
[8] 关济实, 石要武, 邱建文, 单泽彪, 史红伟. α稳定分布特征指数估计算法[J]. 吉林大学学报(工学版), 2018, 48(2): 618-624.
[9] 李炜, 李亚洁. 基于离散事件触发通信机制的非均匀传输网络化控制系统故障调节与通信满意协同设计[J]. 吉林大学学报(工学版), 2018, 48(1): 245-258.
[10] 孙晓颖, 王震, 杨锦鹏, 扈泽正, 陈建. 基于贝叶斯网络的电子节气门电磁敏感度评估[J]. 吉林大学学报(工学版), 2018, 48(1): 281-289.
[11] 武伟, 王世刚, 赵岩, 韦健, 钟诚. 蜂窝式立体元图像阵列的生成[J]. 吉林大学学报(工学版), 2018, 48(1): 290-294.
[12] 袁建国, 张锡若, 邱飘玉, 王永, 庞宇, 林金朝. OFDM系统中利用循环前缀的非迭代相位噪声抑制算法[J]. 吉林大学学报(工学版), 2018, 48(1): 295-300.
[13] 王金鹏, 曹帆, 贺晓阳, 邹念育. 基于多址干扰和蜂窝间互扰分布的多载波系统联合接收方法[J]. 吉林大学学报(工学版), 2018, 48(1): 301-305.
[14] 石文孝, 孙浩然, 王少博. 无线Mesh网络信道分配与路由度量联合优化算法[J]. 吉林大学学报(工学版), 2017, 47(6): 1918-1925.
[15] 姜来为, 沙学军, 吴宣利, 张乃通. LTE-A异构网络中新的用户选择接入和资源分配联合方法[J]. 吉林大学学报(工学版), 2017, 47(6): 1926-1932.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 《吉林大学学报(工学版)》编辑部
地址：长春市人民大街5988号　电话：+86-431-85095297　传真：+86-431-85094074　E-mail: xbgxb@jlu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发