Lattice Signal Sets to Combat Pulsed Interference from Aeronautical Signals
Lattice Signal Sets to Combat Pulsed Interference from Aeronautical Signals
复制标题
Lattice Signal 设置可对抗航空信号的脉冲干扰
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
W. Henkel
中科院分区：
文献类型：
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作者：
Khodr A. Saaifan;W. Henkel
宽带航空多载波通信（B-AMC）系统的镶嵌方法受到距离测量设备（DME）系统相邻通道的严重干扰。在这里，我们提出了一种简单的技术来减轻 DME 干扰，并随后在 DME 通道的频谱间隙中实现传输。所提出的技术在发射机处使用基于采用网格信号集的预编码，以便修改DME信号频谱的形状。在此，对接收的子载波应用简单的限幅方法以减轻DME干扰的影响。仿真表明，所提出的子载波限幅技术可以通过选择适当的限幅阈值来显着降低 DME 信号的影响。选择它们是为了在限幅操作后最大化信号干扰噪声比 (SINR)。模拟还证实，与当前的缓解技术相比，所提出的方法提供了明显更好的性能。
The inlay approach for the Broadband Aeronautical Multicarrier Communications (B-AMC) system is exposed to severe interference from the adjacent channels of the distance measuring equipment (DME) system. Here, we propose a simple technique to mitigate DME interference and subsequently enable transmission in the spectral gaps of the DME channels. The proposed technique uses a precoding at the transmitter based on employing lattice signal sets in order to modify the shape of the DME signal spectrum. Hereto, a simple clipping method is applied to the received subcarriers to mitigate the impact of the DME interference. Simulations show that the proposed subcarrier clipping technique can considerably reduce the effect of the DME signal by choosing appropriate clipping thresholds. They have been selected to maximize the signal-to interference-and-noise ratio (SINR) after the clipping operation. It has also been confirmed by simulations that the proposed method offers a significantly better performance when compared to current mitigation techniques.