基于第四阶循环积聚物铁路运输无线通信系统干扰检测研究
Peng Wang1, Junliang Yao2, Yong Pu2
1China Railway First Survey and Design Institute Group Co., Ltd., Xi'an 710043, China.
Sensors (Basel, Switzerland)
|October 14, 2023
概括
本研究引入了用于铁路交通无线通信的新干扰检测算法. 第四阶循环累积 (FOCC) 方法有效地识别相邻和相同频率的干扰,提高火车的安全性.
科学领域:
- 电气工程 电气工程
- 信号处理 信号处理
- 电信 电信服务 电信服务 电信服务
背景情况:
- 铁路交通无线通信系统对于运营至关重要,但易受干扰.
- 干扰可能会破坏关键服务,如调度和控制,造成安全风险.
- 现有的检测方法可能无法充分解决复杂的铁路环境中的所有干扰类型.
研究的目的:
- 开发和评估用于铁路交通无线系统的新型干扰检测算法.
- 解决迫切需要可靠的干扰检测,以确保运营安全.
- 与传统方法相比,提高干扰检测的准确性和范围.
主要方法:
- 对具有各种调制模式的信号进行第四阶周期积累量 (FOCC) 分析.
- 开发基于FOCC的相邻频率干扰检测算法.
- 建议使用FOCC和接收功率的同频干扰检测算法.
- 通过在各种信号噪声比 (SNR) 条件下的模拟和现实的通道损伤进行性能评估.
主要成果:
- 拟议的算法在低SNR的情况下实现了超过90%的正确检测率 (相邻干扰为2dB,相同频率干扰为-4dB).
- 在多路径传播和多普勒效应下,性能仍然很高,分别在3dB和7dBSNR下,速度超过90%.
- 基于FOCC的方法成功地同时检测到相邻频率和相同频率的干扰.
- 与二级统计方法相比,检测准确度得到了显著提高.
结论:
- 开发的基于第四阶循环累积 (FOCC) 的算法为铁路运输无线通信提供了强大而准确的干扰检测.
- 这些方法通过可靠地识别相邻和相同频率的干扰来提高安全性,即使在具有挑战性的通道条件下.
- 虽然计算复杂性增加,但它仍然可以用于实际的铁路运输应用,为现有技术提供了更好的替代方案.
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