Loading Analysis of Channelized SATCOM System with Link-Margin Degree Optimization

2018 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC) Pub Date : 2018-10-01 DOI:10.1109/CYBERC.2018.00088

Yuewei Jia, D. Qi, Yan Shi, Jianghua Li, Zhuyun Chen, Xiaokai Zhang

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引用次数: 1

Abstract

In this letter, we investigate the loading analysis of digital channelized satellite communication (SATCOM) system operating in frequency-division multiple access (FDMA) mode, multi-frequency time-division multiple access (MF-TDMA) mode and overlay combined multiple access (OCMA) mode. In an effort to enhance link stability of these systems, a max-min optimization objective for link-margin degree (LMD) is firstly established under the constraint that all loading links are supportable. Basing on fully using the power of transmitting terminals and directly reducing the difference among all LMDs to enhance the minimum LMD as much as possible, an effective maximum value back-off searching (MVBS) algorithm is proposed for the optimization model. Finally, numerical simulations reveal that, under the constraint of link supportability, the proposed algorithm brings about considerable improvement of the minimum LMD for enhancing link stability, which effectively demonstrates the correctness of our scheme.

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链路裕度优化的信道化卫星通信系统负载分析

在这封信中，我们研究了在频分多址(FDMA)模式、多频时分多址(MF-TDMA)模式和覆盖组合多址(OCMA)模式下运行的数字信道化卫星通信(SATCOM)系统的负载分析。为了提高系统的链路稳定性，首先在所有加载链路都可支持的约束下，建立了链路裕度(LMD)的最大最小优化目标;在充分利用发射终端功率和直接减小各LMD之间的差异以尽可能提高最小LMD的基础上，提出了一种有效的最大值后退搜索(MVBS)算法。最后，数值仿真结果表明，在链路可支持性约束下，本文提出的算法在提高链路稳定性的最小LMD方面有了较大的改进，有效地验证了算法的正确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC)

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