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Volume 41 Issue 8
Aug.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(8): 1367-1373.
LIU Haitao, ZHANG Zhimei, CHENG Wei, et al. Impulse interference mitigation method based on joint compressed sensing and whitening of interference[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1367-1373. doi: 10.13700/j.bh.1001-5965.2014.0545(in Chinese)
Citation: LIU Haitao, ZHANG Zhimei, CHENG Wei, et al. Impulse interference mitigation method based on joint compressed sensing and whitening of interference[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1367-1373. doi: 10.13700/j.bh.1001-5965.2014.0545(in Chinese)
shu

Impulse interference mitigation method based on joint compressed sensing and whitening of interference

doi: 10.13700/j.bh.1001-5965.2014.0545
  • 1.

    Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China

  • 2. School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 05 Sep 2014
  • Publish Date: 20 Aug 2015
    Abstract
  • To mitigate the deleterious influence of distance measure equipment (DME) interference on orthogonal frequency division multiplexing (OFDM) receiver of L-band digital aeronautical communications system 1(L-DACS1) operating as an inlay system, a new DME interference suppression method was proposed based on joint compressed sensing and whitening of residual interference. Firstly, the DME impulse interference was observed via null subcarriers channel of the OFDM receiver and reconstructed with convex optimization constrained l1 norm minimization method based on the sparse property of the DME impulse interference in time domain. Then the reconstructed DME impulse interference was transformed to frequency domain and eliminated from the received signal. Finally, to avoid burst errors of demodulator, the residual impulse interference was converted to white Gaussian noise by using the de-interleaver and inverse orthogonal transformer. The computer simulation indicates that the proposed method can reduce the impact of DME interference effectively, and improve the reliability of OFDM receiver of the L-DACS1 system significantly.

     

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