Related Experiment Video
Updated: May 10, 2025
07:49
Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
Published on: November 26, 2019
7.9K
UAV Onboard STAR-RIS Service Enhancement Mechanism Based on Deep Reinforcement Learning
Junjie Yan1,2, Yichen Xu1,2, Haohao Yuan1,2
1School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China.
Sensors (Basel, Switzerland)
|April 28, 2025
Summary
This study introduces a new method for Unmanned Aerial Vehicles (UAVs) and reconfigurable intelligent surfaces (RISs) to improve communication. It optimizes UAV angles and RIS settings to boost service for all users, reducing overall system time.
Area of Science:
- Wireless Communication
- Aerial Networks
- Metamaterials
Background:
- Unmanned Aerial Vehicles (UAVs) and Reconfigurable Intelligent Surfaces (RISs) are key for enhancing wireless communication coverage.
- Current research often overlooks the impact of UAV hovering angles on signal reflection and transmission with STAR-RIS.
Purpose of the Study:
- To propose a novel STAR-RIS-assisted UAV mechanism for dynamic service area partitioning based on real-time user distribution.
- To enhance channel quality for edge and occluded users by jointly optimizing UAV trajectory, hovering angle, and STAR-RIS parameters.
Main Methods:
- Decomposition of the complex optimization problem into subproblems.
- Chained Lin-Kernighan (CLK) algorithm for UAV flight trajectory optimization.
- TD3 algorithm for optimizing STAR-RIS parameters and UAV hovering angle.
Main Results:
- Significant improvement in channel quality for edge and occluded users.
- Effective reduction in system service time and user transmission time.
- Demonstrated superiority over traditional methods in performance metrics.
Conclusions:
- The proposed mechanism successfully addresses co-channel interference in dynamically partitioned service areas.
- Joint optimization of UAV trajectory, hovering angle, and STAR-RIS parameters is crucial for advanced wireless systems.
- This approach offers a significant advancement in UAV-RIS integrated communication systems.
Related Concept Videos
01:23Reinforcement
148
Positive and negative reinforcement are key concepts in operant conditioning, a learning process where the consequences of a behavior affect the likelihood of that behavior being repeated.
Positive reinforcement occurs when a behavior is followed by the presentation of a rewarding stimulus, increasing the frequency of that behavior. For example:
Positive reinforcement occurs when a behavior is followed by the presentation of a rewarding stimulus, increasing the frequency of that behavior. For example:
148
01:12Observational Learning
97
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
97
01:24Reinforcement Schedules
108
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
Once a behavior is learned,...
108
01:27Associative Learning
236
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
236
01:14Avoidance Learning and Learned Helplessness
1.7K
Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
1.7K
01:18Neural Control of Respiration
1.9K
The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
1.9K