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相关概念视频

Receiver Operating Characteristic Plot01:15

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A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
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Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
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Updated: Sep 10, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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在无人机辅助的分速多重接入系统中进行秘密通信性能评估

Nguyen Hong Nhu1, Le Chi Bao2, Bui Vu Minh3

  • 1Faculty of Engineering and Technology, Saigon University, Ho Chi Minh City, Vietnam.

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概括

速度分割多重访问 (RSMA) 增强无人机网络中的秘密通信. 与非直角多重访问 (NOMA) 相比,RSMA显著提高了系统的隐蔽性.

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科学领域:

  • 无线通信
  • 网络安全
  • 空中网络

背景情况:

  • 无人机网络面临安全挑战,特别是秘密通信.
  • 现有的多重访问方案可能不足以满足无人机系统的隐蔽性要求.
  • 敌人 (例如威利) 的监控需要强有力的安全措施.

研究的目的:

  • 在多用户无人机下线网络中调查分速多重访问 (RSMA) 的应用.
  • 分析系统的隐蔽性和性能.
  • 优化无人机部署以实现最大的系统隐蔽性.

主要方法:

  • 开发了一个全面的绩效评估分析框架.
  • 关键性能指标的衍生闭式表达式:检测错误概率 (DEP),中断概率 (OP) 和错误率 (ER).
  • 采用了无人机静态定位的交替优化算法,并在高SNR区域进行了异面分析.

主要成果:

  • 使用威利的检测错误概率 (DEP) 量化系统隐蔽性.
  • 在Nakagami-m色下分析了合法用户的中断概率 (OP) 和机动率 (ER).
  • 确定最佳无人机位置以最大限度地隐藏.
  • 与非对角多重访问 (NOMA) 相比,RSMA 显示了显著的隐蔽优势.

结论:

  • 在无人机网络中加强秘密通信.
  • 拟议的分析框架和优化算法有效评估和改善系统的隐蔽性.
  • 在被监控的无人机环境中,RSMA的隐蔽性优于NOMA.