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High-spectral-efficiency sparse code multiple access method of low-earth-orbit satellite satellite satellite-ground link

A sparse code multiple access, low-orbit satellite technology, applied in the field of high spectral efficiency sparse code multiple access, can solve the problem of the shortage of spectrum resources of the low-orbit satellite Internet of Things, and achieve reduced complexity, improved performance, and high spectral efficiency. performance effect

Pending Publication Date: 2020-02-18
HARBIN INST OF TECH
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Problems solved by technology

[0008] The present invention aims to solve the problem of shortage of spectrum resources of low-orbit satellite Internet of Things, thereby providing a high-spectrum-efficiency sparse code multiple access method for low-orbit satellite satellite-ground links

Method used

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  • High-spectral-efficiency sparse code multiple access method of low-earth-orbit satellite satellite satellite-ground link
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  • High-spectral-efficiency sparse code multiple access method of low-earth-orbit satellite satellite satellite-ground link

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Embodiment Construction

[0035] The following will combine Figure 1 to Figure 11The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those of ordinary skill in the art All other embodiments obtained under the premise of no creative work belong to the protection scope of the present invention.

[0036] system model

[0037] For low-orbit satellite Internet of Things scenarios, combined with the previously proposed high-spectrum-efficiency sparse-code multiple access system model, a high-spectrum-efficiency sparse-code multiple access method under the Lutz channel of the low-orbit satellite satellite-ground link is proposed, as shown in figure 1 As shown, the parameters of the system model are shown in Table 1. Assuming that J users share N resource blocks, and J>N, the overload factor of...

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Abstract

The invention discloses a high-spectral-efficiency sparse code multiple access method of a low-earth-orbit satellite satellite satellite-earth link, relates to the technical field of information and communication, and aims to solve the problem of spectrum resource shortage of the Internet of Things of low-earth-orbit satellites. The invention aims to solve the problem of spectrum resource shortageof the low-earth-orbit satellite Internet of Things. A high spectral efficiency sparse code multiple access method of a low earth orbit satellite satellite satellite-ground link is provided. According to the method, a high spectral efficiency frequency division multiplexing technology is used for replacing traditional orthogonal frequency division multiplexing, carrier spacing is compressed at asending end, wide-area coverage of massive terminal users and efficient utilization of spectrum resources are achieved, and compared with a traditional sparse code multiple access method, the method has higher spectral efficiency performance.

Description

technical field [0001] The invention relates to the technical field of information and communication, in particular to a high spectral efficiency sparse code multiple access method for a satellite satellite-ground link. Background technique [0002] Under the background of the future satellite Internet of Things strategy, there are higher requirements for satellite-ground link communication. With the rise of the Internet of Things, the type and number of devices that provide Internet of Things access capabilities are undergoing drastic changes. However, due to the ground-based Internet of Things It mainly covers cities, suburbs and other areas with relatively dense business, and the coverage is very limited. In some special environments such as deserts, forests, mountains, oceans, etc., the terrestrial Internet of Things cannot be completely covered, which limits the application and development of the Internet of Things. Therefore, The ground communication network alone cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
CPCH04L5/0008H04L1/0056H04L1/0071H04L1/005
Inventor 贾敏李东博郭庆顾学迈刘晓锋
Owner HARBIN INST OF TECH
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