Results 221 to 230 of about 2,688,437 (267)

Towards Beam Hopping and Power Allocation in Multi-Beam Satellite Systems With Parameterized Reinforcement Learning

IEEE Transactions on Vehicular Technology
The simultaneous optimisation of beam hopping and power allocation is a crucial technique for enhancing the performance of Multi-Beam Satellite (MBS) systems.
Yongyi Ran, Jiangtao Luo, Shuangwu Chen
exaly   +2 more sources

Performance Analysis in Satellite Communication With Beam Hopping Using Discrete-Time Queueing Theory

IEEE Internet of Things Journal
Satellite communication with beam hopping is a promising approach to meeting wide-area user traffic demands under on-board resource limitation. However, there is currently a lack of theoretical models that characterize the impact of beam hopping on user ...
Mugen Peng, Yaohua Sun
exaly   +2 more sources

Dynamic Beam Hopping Time Slots Allocation Based on Genetic Algorithm of Satellite Communication under Time-Varying Rain Attenuation

Electronics, 2021
Beam hopping technology is considered to provide a high level of flexible resource allocation to manage uneven traffic requests in multi-beam high throughput satellite systems.
Gengxin Zhang, Ziwei Liu
exaly   +2 more sources

Resource Allocation and Load Balancing for Beam Hopping Scheduling in Satellite-Terrestrial Communications: A Cooperative Satellite Approach

IEEE Transactions on Wireless Communications
Satellite-terrestrial communications based on mega low-Earth orbit (LEO) constellations enable extensive coverage and high data rates. However, the communication performance is significantly impacted by the non-uniform traffic distribution and the ...
Guan-Hua Wang, Fang Yang, Jian Song, Zhu Han   +3 more
semanticscholar   +1 more source

Joint Beamforming and Dynamic Beam Hopping Based on MAPPO for LEO Satellite Communication System

IEEE Wireless Communications Letters
To meet time-varying and nonuniform service requirements, how to flexibly allocate resource-constrained to meet the traffic demands is an important topic in LEO satellite communication system.
Meng Meng, Bo Hu, Shan-Zhi Chen, Shao-Li Kang   +3 more
semanticscholar   +1 more source

Multi-Satellite Beam Hopping and Power Allocation Using Deep Reinforcement Learning

arXiv.org
In non-geostationary orbit (NGSO) satellite communication systems, effectively utilizing beam hopping (BH) technology is crucial for addressing uneven traffic demands. However, optimizing beam scheduling and resource allocation in multi-NGSO BH scenarios
Xia Xie, Kexin Fan, Wenfeng Deng, Nikolaos Pappas, Qin-Yu Zhang   +4 more
semanticscholar   +1 more source

A Low-Complexity Return-Link Beam-Hopping Scheduling for NGSO Mega-Constellations With Dynamic Topology and Uneven Traffic

IEEE Internet of Things Journal
Nongeostationary orbit (NGSO) constellations characterized by seamless coverage and high throughput have been envisioned as a promising solution to 6G, where beam hopping (BH) technique plays an indispensable role to achieve on-demand service.
Zhi-Chien Lin, Lin-Ling Kuang, Bing-Kun Liu, Chun-Xiao Jiang, Jin Jin   +4 more
semanticscholar   +1 more source

Joint Beam Hopping and Precoding for Dense LEO Satellite Communication Systems

IEEE Internet of Things Journal
Beam hopping (BH) is a widely adopted technique in multibeam satellite communication systems, and it can effectively improve the system capacity.
Gao-Feng Cui, Xing Xin, Le-Xi Xu, Wei-Dong Wang, Xiongyan Tang   +4 more
semanticscholar   +1 more source

Instant Positioning by Single Satellite: Delay-Doppler Analysis Method Enhanced by Beam-Hopping

IEEE Transactions on Vehicular Technology
Terminal positioning using a single low earth orbit (LEO) communication satellite is an important means to compensate for the loss of positioning capability under global navigation satellite system (GNSS) denial.
Jian-Guo Li, Chuntao Han, Neng Ye, Jian-Xiong Pan, Kai Yang, Jian-Ping An   +5 more
semanticscholar   +1 more source

Satellite-Terrestrial Coordinated Multi-Satellite Beam Hopping Scheduling Based on Multi-Agent Deep Reinforcement Learning

IEEE Transactions on Wireless Communications
Non-geostationary orbit (NGSO) constellations enabled by beam hopping (BH) technology are characterized by wide coverage and high spectrum efficiency. However, how to efficiently schedule multi-satellite beam resources to satisfy the heterogeneous and ...
Zhi Lin, Zuyao Ni, Lin-Ling Kuang, Chun-Xiao Jiang, Zhen Huang   +4 more
semanticscholar   +1 more source