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联合压缩感知与接收分集的DME干扰抑制方法

DME interference suppression method based on joint compressed sensing and receiving diversity
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摘要 针对L波段数字航空通信系统(L-DACS1)反向链路测距仪(DME)信号干扰正交频分复用(OFDM)接收机的问题,提出基于联合压缩感知与接收分集的干扰抑制方法。在地面基站各接收支路中,首先通过压缩感知重构DME干扰信号,随后将重构的DME信号在时域进行干扰消除,消除干扰后各支路信号最终通过最大比值合并提高OFDM解调器输出信噪比,以克服测距仪残留信号的影响。仿真结果表明:该方法可有效抑制DME信号的干扰,提高L-DACS1系统的可靠性。 In order to mitigate the impact of DME（distance measure equipment） interference on OFDM（orthogonal frequency division multiplexing） receiver of reverse link for L-band digital aeronautical communications system 1 （L- DACS1）, a new interference suppression scheme of OFDM receiver is proposed based on joint compressed sensing and receiving diversity. Firstly, in ground station, compressed sensing method is used to reconstruct DME impulse interference in each receiving branch. Then, the reconstructed DME interference is eliminated from the received signals in the time-domain. Finally, maximum ration combining method is utilized to overcome the residual DME interference and improve SNR of OFDM demodulator. Simulation results show that the proposed method can effectively suppress DME interference and improve the reliability of L-DACS1 system.
作者 刘海涛 张慧敏 刘亚洲 李冬霞
机构地区 中国民航大学天津市智能信号与图像处理重点实验室
出处 《中国民航大学学报》 CAS 2016年第4期41-46,共6页 Journal of Civil Aviation University of China
基金 国家自然科学基金项目(U1233117 61271404)
关键词 L波段数字航空通信系统1 测距仪 压缩感知 接收分集 L-band digital aeronautical communications system 1 distance measure equipment compressed sensing receiving diversity
分类号 TN929.5 [电子电信—通信与信息系统] V355 [航空宇航科学与技术—人机与环境工程]
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参考文献16

  • 1NEJ1 N, DE LACERDA R, Azoulay A, et al. Survey on the future aero- nautical communication system and its development for continental communications[J]. IEEE Transactions on Vehicular Teehnology, 2013, 62(1):182-191.
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二级参考文献20

  • 1Neji N,De Lacerda R, Azoulay A, et al. Survey on the future aeronautical communication system and its development for conti- nental communications [ J ]. IEEE Transactions on Vehicular Technology ,2013,62 ( 1 ) : 182-191.
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  • 6Epple U, Hoffmann F, Schnell M. Modeling DME interference impact on LDACSI [ C ] // Integrated Communications, Navigation and Surveillance Conference ( ICNS ). Piscataway, N J: IEEE Press, 2012 : G7-1 -G7 -13.
  • 7Epple U, Brandes S, Gligorevic S, et al. Receiver optimization for L-DACS1 [ C ] // IEEE/AIAA 28th Digital Avionics Systems Conference. Piseataway, NJ : IEEE Press, 2009 : 4. B. 1-1-4. B. 1-12.
  • 8Brandes S, Epple U, Schnell M. Compensation of the impact of interference mitigation by pulse blanking in OFDM systems [ C]// IEEE Global Telecommunications Conference. Piscat- away, NJ : IEEE Press ,2009 : 1-6.
  • 9Epple U, Shutin D, Schnell M. Mitigation of impulsive frequency- selective interference in OFDM based systems [ J ]. IEEE Wire- less Communications Letters,2012,1 (5) :484-487.
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共引文献14

中国民航大学学报
2016年 第4期

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