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相关概念视频

Orthogonal Trajectories01:26

Orthogonal Trajectories

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Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
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Communication01:03

Communication

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Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
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Communication01:28

Communication

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Sharing information, concepts, and emotions to foster mutual understanding is communication. The sender, recipient, and transaction must be considered in this manner. The sender is the person who shares the message, the recipient is the person who receives and understands the message, and the transaction is the method used to deliver the message and the variables that affect the communication's context and surroundings. The nurse-client connection is built on therapeutic communication.
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Short-distance Transport of Resources02:12

Short-distance Transport of Resources

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Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
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Structural Joints: Synovial Joints01:16

Structural Joints: Synovial Joints

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Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
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Structural Joints: Fibrous Joints01:03

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Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
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All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
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相关实验视频

Updated: Jan 29, 2026

A Semantic Priming Event-related Potential ERP Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder
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无人机系统中的联合学习语义通信:基于PPO的联合轨迹和资源配置优化.

Shuang Du1,2, Yue Zhang3, Zhen Tao1

  • 1School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 611731, China.

Sensors (Basel, Switzerland)
|January 28, 2026
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概括

这项研究将无人机的语义通信 (SC) 与联合学习 (FL) 整合在一起,减少计算负载. 靠近政策优化 (PPO) 算法确保了公平的服务质量,最大限度地减少了能源使用和任务时间.

关键词:
邻近政策优化 (PPO)无人驾驶飞行器 (UAV) 是一种无人驾驶飞行器.深度学习是一种深度学习.联合学习的联合学习资源分配的资源分配.语义沟通是一种语义沟通.轨道优化轨道优化

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科学领域:

  • 无线通信无线通信
  • 人工智能的人工智能
  • 分布式系统 分布式系统

背景情况:

  • 语义通信 (SC) 通过发送语义信息 (SI) 而不是原始数据来减少数据传输,非常适合具有尺寸,重量和功率 (SWAP) 约束的无人机.
  • 联合学习 (FL) 提供了一种分布式培训方法,可以将诸如语义提取 (SE) 等计算密集型任务从无人机上卸载给边缘用户.

研究的目的:

  • 证明将FL集成到无人机的SC系统中的可行性.
  • 提出一种基于近接政策优化 (PPO) 的新解决方案,以实现无人机辅助SC的服务公平性.
  • 共同优化无人机飞行轨迹和带宽分配,以提高效率和公平性.

主要方法:

  • 在无人机通信系统中开发了用于分布式语义提取的联合学习框架.
  • 制定了一个关于无人机轨迹和带宽分配的联合优化问题.
  • 应用近距离政策优化 (PPO) 以确保公平的服务质量 (QoS).

主要成果:

  • FL框架大大降低了无人机上的计算资源消耗.
  • 基于PPO的算法有效地减少了能源消耗和任务完成时间.
  • 在所有边缘用户之间确保公平的 QoS.

结论:

  • 联合学习是一种可行的方法,可以减少基于UAV的语义通信中的计算负担.
  • 拟议的PPO算法成功地平衡了无人机辅助SC系统的效率和公平性.
  • 这项工作为更高效,更公平的无人机通信网络铺平了道路.