DME interference mitigation for LDACS1 based on decision-directed noise estimation
DME interference mitigation for LDACS1 based on decision-directed noise estimation
复制标题
基于决策引导噪声估计的 LDACS1 DME 干扰抑制
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
A. Madhukumar
中科院分区：
文献类型：
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作者：
M. Raja;A. P. Vinod;A. Madhukumar
L波段数字航空通信系统1（LDACS 1）是一种基于正交频分复用（OFDM）技术的宽带系统，是未来空对地（A/G）通信最有前途的候选系统。LDACS 1作为嵌入式系统运行，并限于带宽为1 MHz的两个相邻测距设备（DME）通道之间的500 kHz频谱间隙。本文提出了一种用于LDACS 1系统的判决引导噪声估计（DDNE）方法，以抑制来自DME的脉冲干扰。所提出的方法消除了载波间干扰（ICI）的影响，这是一个主要的问题与传统的脉冲消隐方法的LDACS 1系统。仿真结果突出了DME干扰对LDACS 1系统的影响，并显示了所提出的方法相比，传统的干扰抑制方法在误码率（BER）方面的性能改善。
L-band digital aeronautical communication system type 1 (LDACS1), a broadband system based on Orthogonal Frequency-Division Multiplexing (OFDM) is the most promising candidate for the future air-to-ground (A/G) communications. LDACS1 is operating as an inlay system and limited to the 500 kHz spectral gap between the two adjacent distance measuring equipment (DME) channels of bandwidth 1 MHz. In this paper, a decision directed noise estimation (DDNE) approach to mitigating the pulsed interference from DME for LDACS1 system is proposed. The proposed method removes the effect of inter-carrier interference (ICI) which is a major problem with the conventional pulse blanking method for LDACS1 system. The simulation results highlight the impact of DME interference onto the LDACS1 system and show the performance improvement of the proposed method compared to conventional interference mitigation methods in terms of bit error rate (BER).