Massive malicious jamming devices and advanced jamming techniques have been emerged along with the development of wireless communication networks. In order to effectively eliminate the harmful interference, a new scheme known as the cognitive frequency hopping (CHF) is proposed recently, which can evaluate the occupancy of frequency hopping slots and adjust the parameters dynamically according to the spectrum sensing results. Although the existing literature only shows that CFH systems can achieve reliable data transmission, the factors affecting the reliability are rarely analyzed. Therefore, we analyze the reliability performance of the CHF systems in this article, and define a new metric named anti-interference tolerance to measure the reliability performance of the CHF systems. Moreover, we derive the analytic expression of anti-interference tolerance by analyzing the effect of false alarm probability, missed detection probability, and communication link convergence delay. Simulation results validate the effectiveness of our analyses for measuring the reliability capacity of the CHF systems. To satisfy the demands of different communication scenarios, the CFH systems can adjust relevant parameters in the light of our theoretical derivation.

中文翻译：

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认知跳频通信系统抗干扰能力研究

随着无线通信网络的发展，出现了大量的恶意干扰设备和先进的干扰技术。为了有效消除有害干扰，最近提出了一种新的认知跳频（CHF）方案，它可以评估跳频时隙的占用情况，并根据频谱感知结果动态调整参数。虽然现有文献仅表明CFH系统可以实现可靠的数据传输，但很少分析影响可靠性的因素。因此，我们在本文中分析了 CHF 系统的可靠性性能，并定义了一个名为抗干扰容限的新指标来衡量 CHF 系统的可靠性性能。而且，通过分析虚警概率、漏检概率和通信链路收敛延迟的影响，推导出抗干扰容限的解析表达式。仿真结果验证了我们分析测量 CHF 系统可靠性能力的有效性。为了满足不同通信场景的需求，CFH系统可以根据我们的理论推导调整相关参数。