DME interference suppression method based on joint compressed sensing and receiving diversity

Abstract

Abstract:

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 (LDACS1),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.

Key words: L-band digital aeronautical communications system 1, distance measure equipment, compressed sensing, receiving diversity

CLC Number:

TN929.5
V355

LIU Haitao, ZHANG Huimin, LIU Yazhou, LI Dongxia. DME interference suppression method based on joint compressed sensing and receiving diversity[J]. .

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