Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication

Guang Yang; Min Nie; Fan Jiang

doi:10.3969/j.issn.1000-0801.2014.04.010

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Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication

Research And Development | 更新时间：2024-06-05

- Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication
- Telecommunications Science Vol. 30, Issue 4, Pages: 68-73(2014)
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- DOI：10.3969/j.issn.1000-0801.2014.04.010
  CLC：
- Published Online：2014-04，
  
  Published：20 April 2014
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Guang Yang, Min Nie, Fan Jiang. Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication[J]. Telecommunications science, 2014, 30(4): 68-73.
DOI：

Guang Yang, Min Nie, Fan Jiang. Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication[J]. Telecommunications science, 2014, 30(4): 68-73. DOI： 10.3969/j.issn.1000-0801.2014.04.010.

摘要

为解决低轨道量子卫星覆盖范围下，多个量子用户的接入与信息传输问题，提出了一种多波束时分量子交换方案，并详细给出了时分量子卫星交换机的工作原理。在不同的通信时隙上，为用户分别建立量子纠缠信道并进行量子信息传送。为克服星地链路及星际链路的时延问题，提出了基于量子信道字的交换和传输方法，从而降低单时隙量子比特传输的平均时延。系统性能分析与仿真结果表明，时隙个数、量子信道字长是影响系统的用户数量、吞吐量、呼损指标的关键因素。在一定的信道条件下，通过对这些系统参数进行合理设计，能够满足特定量子卫星系统的服务需求。

Abstract

Low orbit quantum satellite system is used to realize a worldwide secure communication. To solve the problem of multiple quantum users' access and information transmission in satellite coverage

a multi-beam time division quantum switching scheme was proposed

and a detailed description of the structure and working process of the time division quantum switch were given. In different time slot

the switch set up a quantum entanglement swapping channel for different users to transmit their quantum information. To overcome the delay in satellite-earth link and satellite-satellite link

a switching and transmission method was proposed based on quantum channel byte

which decreased the average qubit transmission delay for single time slot. Performance analysis shows that the number of time slot and the length of quantum channel byte have the key influence on the user number

the traffic and the call of loss. In certain channel conditions

by rational designing of these parameters

the quantum satellite communication system can meet the demanded service requirements.

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references

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