Analysis of Multiple Access Approaches on IoT via LEO Satellite

Kiki, Mesmin J. Mbyamm; Iddi, Ibrahim; Olivero, Mayrelis Aurimer Bordones

doi:10.1109/icsess49938.2020.9237701

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…The space segment is composed of low earth orbit satellites (LEO)/geostationary orbit satellites (GEO), which provide services for the ground segment through various link transmissions. The ground segment is composed of various IoT terminals, through which sensors are used for information interaction [10,11]. Taking into account the limited spectrum resources, changing communication conditions, and higher user capacity requirements, the satellite multibeam uplink communication system considered in this article uses CDMA.…”

Section: Multi-beam Multi-user S-iot System Modelmentioning

confidence: 99%

User Capacity Analysis of Space-Based Internet of Things with Multibeam Techniques

Zhang

Sun

Hou

et al. 2022

Wireless Communications and Mobile Computing

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Space-based Internet of Things (S-IoT) utilizes the characteristics of satellite network coverage, strong antidestructiveness, and full-time work to realize large-scale sensing and interconnection of everything in the sky, land, sea, and air. The user capacity of S-IoT satellites is mainly determined by beam design, communication schemes, satellite-to-earth links, and communication protocols, which directly affect the system capacity and operational capabilities of S-IoT. This paper proposes an S-IoT satellite user capacity analysis model with multibeam and spread spectrum technology. Taking into account the randomness of user distribution, the difference in transmit power, and different spreading sequences, the user capacity of S-IoT satellites was simulated and compared in different scenarios. Based on these results, this article analyzes the key factors affecting user capacity, which will provide a valuable reference for S-IoT design, link optimization, and power selection.

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Section: Multi-beam Multi-user S-iot System Modelmentioning

confidence: 99%

User Capacity Analysis of Space-Based Internet of Things with Multibeam Techniques

Zhang

Sun

Hou

et al. 2022

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

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Optimization of multiple access mode for large-scale constellation networking communication

GUO,

XU,

et al. 2023

西北工业大学学报

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In the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the previous multiple access technology can no longer meet the network capacity requirements of large-scale constellations. In order to meet the requirements of massive connections of satellite nodes in large-scale constellation for new networking communication methods, this paper establishes a sparse spread spectrum inter-satellite communication system with sparse code multiple access (SCMA) as the core. At the same time, the channel characteristics of large-scale constellation are analyzed and the corresponding inter satellite channel model is established in MATLAB. Based on this channel model, the performance of the system is simulated. The simulation results show that under the same signal energy to noise ratio, the sparse spread spectrum inter-satellite communication system established in this paper has better BER characteristics compared with orthogonal frequency division multiple access (OFDMA) and code division multiple access (CDMA). In addition, the threshold signal energy to noise ratio of the system is more than 2 dB better than that of CDMA technology, and the utilization rate of time-frequency resources is 50% higher than that of OFDMA technology.

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A New Batch Access Scheme with Global QoS Optimization for Satellite-Terrestrial Networks

Cui

Xue

et al. 2022

GLOBECOM 2022 - 2022 IEEE Global Communications Conference

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Analysis of Multiple Access Approaches on IoT via LEO Satellite

Cited by 4 publications

References 10 publications

User Capacity Analysis of Space-Based Internet of Things with Multibeam Techniques

User Capacity Analysis of Space-Based Internet of Things with Multibeam Techniques

Optimization of multiple access mode for large-scale constellation networking communication

A New Batch Access Scheme with Global QoS Optimization for Satellite-Terrestrial Networks

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