联合压缩感知与接收分集的DME 干扰抑制方法

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联合压缩感知与接收分集的DME 干扰抑制方法

刘海涛，张慧敏，刘亚洲，李冬霞

（taptap下载安装安卓天津市智能信号与图像处理重点实验室，天津300300）

收稿日期:2015-09-24 修回日期:2015-11-20 出版日期:2016-08-26 发布日期:2016-10-13
作者简介:刘海涛（1966—），男，河北沧州人，教授，博士，研究方向为航空移动通信系统、宽带移动通信.
基金资助:
国家自然科学基金项目（U1233117，61271404）

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

LIU Haitao, ZHANG Huimin, LIU Yazhou, LI Dongxia

(Intelligent Signal and Image Processing Key Lab of Tianjin, CAUC, Tianjin 300300, China)

Received:2015-09-24 Revised:2015-11-20 Online:2016-08-26 Published:2016-10-13

摘要/Abstract

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。

关键词: 波段数字航空通信系统1, 测距仪, 压缩感知, 接收分集

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

中图分类号:

TN929.5
V355

刘海涛，张慧敏，刘亚洲，李冬霞. 联合压缩感知与接收分集的DME 干扰抑制方法[J]. taptap下载安装安卓学报.

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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