一种有效的宽带航空数据链脉冲干扰抑制方法

中国民航大学学报

一种有效的宽带航空数据链脉冲干扰抑制方法

李冬霞¹，杨玲¹，张媛媛²

（1.中国民航大学天津市智能信号与图像处理重点实验室，天津 300300；2. 民航新疆空管局技术保障中心，乌鲁木齐 830016）

收稿日期:2013-10-23 修回日期:2014-01-16 出版日期:2015-02-21 发布日期:2015-01-22
作者简介:李冬霞（1971—），女，陕西榆林人，副教授，工学博士，研究方向为数据网络通信、通信协议的实现.
基金资助:
国家自然科学基金项目（U1233117；61271404）

Effective impulse interference cancellation method for broadband aeronautical data link system

LI Dong-xia¹,YANG Ling¹,ZHANG Yuan-yuan²

(1. Intelligent Signal and Image Processing Key Lab of Tianjin,CAUC,Tianjin 300300,China;2. ATC Technical Support Center,Xinjiang Bureau of Civil Aviation,Urumchi 830016,China)

Received:2013-10-23 Revised:2014-01-16 Online:2015-02-21 Published:2015-01-22

摘要/Abstract

摘要：

为了消除脉冲干扰信号对未来宽带航空数据链系统接收的影响，提出一种脉冲干扰抑制方法。该方法基于压缩感知理论，利用脉冲干扰信号的块稀疏特性以及航空数据链OFDM系统空子载波不传输调制符号的特性，获取观测信号矢量，采用块稀疏贝叶斯学习算法和最大期望估计法，给出稀疏脉冲信号统计参数的学习规则，最后重构出脉冲干扰信号并消除。仿真实验表明，该方法可有效地估计出脉冲干扰信号位置与幅度，干扰消除后系统的误比特性能得到显著改善。

关键词: 宽带航空数据链, 块稀疏贝叶斯算法, 脉冲干扰抑制

Abstract:

In order to mitigate the deleterious impact of impulse interference signal on receiving reliability of the future broadband aeronautical data link communication system,an impulse interference cancellation method based on compressed sensing(CS)theory is proposed. The block-sparse characteristic of impulse signal in broadband aeronautical data link OFDM system is considered and the fact that the virtual sub-carriers in system don't carry modulated symbol is also utilized to obtain measurement vector in the method. Block-sparse Bayesian learning algorithm and the expectation maximum estimation method are used to derive the statistic parameters learning rules of impulse signal. And impulse signal is recovered and removed at last. Simulation results demonstrate that the location and amplitude of impulse signal can be estimated effectively using the proposed method and the BER performance of OFDMsystem is approved significantly after interference cancellation.

Key words: broadband aeronautical data link, block-sparse Bayesian learning algorithm, impulse noise suppression

中图分类号:

TN929.5
V243

李冬霞，杨玲，张媛媛. 一种有效的宽带航空数据链脉冲干扰抑制方法[J]. 中国民航大学学报.

LI Dong-xia,YANG Ling,ZHANG Yuan-yuan. Effective impulse interference cancellation method for broadband aeronautical data link system[J]. .

参考文献

[1] ROKITANSKY C-H，EHAMMER M，GRAUPL TH，et al. B-AMC-A System for Future Broadband Aeronautical Multi-Carrier Communications in the L-Band[C]//2007 Digital Avionics Systems Conference（DASC 2007），Dallas，TX，USA，October 2007：1-13.

[2] BRANDES S，EPPLE U，GLIGOREVIC S，et al. Physical Layer Specification of the L-band Digital Aeronautical Communications System（LDACS1）[C]//2009 Integrated Commications，Navigation and Surveillance Conference（ICNS2009），Washington，DC，USA，May 2009：1-12.

[3] SURAWEERA H A，CHAI C，SHENTU J，et al. Analysis of Impulse Noise Mitigation Techniques for Televison Systems[C]//2003 International OFDM Workshop（InOwo 2003），Hamburg，Germany，September 2003：172-176.

[4] ARMSTRONG J，SURAWEERA H A. Impulse Noise Mitigation for OFDM Using Decision Directed Noise Estimation[C]//2004 IEEE EighthInternatial SymposiumonSpreadSpectrumTechniquesandApplications，2004：174-178.

[5] SERGEY V，ZHIDKOV. Analysis and comparison of several simple impulsive noise mitigation schemes for OFDMreceivers[J]. IEEE Transaction Communications，2008，56（1）：5-9.

[6] BRANDES S，MICHAEL SCHNELL. Compensation of the Impact of Interference Mitigation by Pulse Blanking in OFDM Systems[C]//2009 IEEE Global Telecommunications Conference（GLOBECOM 2009），Honululu，USA，Proc. Nov. 2009：1-6.

[7] EPPLE U，SHIBLI K，SCHNELL M. Investigation of Blanking Nonlinearity in OFDMSystems[C]//2011 IEEE International Conference on Communications（ICC 2011），Kyoto，Japan，June 2011：1-5.

[8] 石光明，刘丹华，高大华，等. 压缩感知理论及其研究进展[J]. 电子学报，2009，37（5）：1070-1081.

[9] European Organization for the Safety of Air Navigation援L-DACS1 System Definition Proposal：Deliverable D2[G]援EUROCONTROL Headquarters，2009.

[10] ZHANG ZHILIN，BHASKAR D RAO. Extension of SBL algorithms for the recovery of block sparse signals with intra-block correlation[J].IEEE Transactions on Signal Processing，2013，61（8）：2009-2015.

[11] 李航.统计学习方法[M].北京：清华大学出版社，2012.