Simulation of a Multi-Frequency Satellite Communication Channel

2020 Moscow Workshop on Electronic and Networking Technologies (MWENT) Pub Date : 2020-03-01 DOI:10.1109/MWENT47943.2020.9067372

A. Mishurov, S. Panko, A. A. Gorchakovskiy, T. A. Zubov, D. Dmitriev, V. N. Tyapkin

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引用次数: 3

Abstract

The growing number of subscribers and the volume of transmitted information requires an increase in the capacity of satellite communication systems. This is possible through the use of high orders of signal constellations, spatial separation of channels, effective noise-resistant codes. In addition, the new standards require the effective use of nonlinear power amplifiers that must operate close to saturation. Of interest is the increase in the capacity of satellite communication systems due to the multi-frequency mode in the transponder channel. The article reveals the channel structure, gives a detailed description of the input and output multiplexers, a nonlinear amplifier, a mixer, and a local oscillator. The structure of the computer model of the transponder channel and the multi-frequency signal of the ground station is shown. The simulation results show that the multi-frequency mode introduces additional intermodulation distortion of the carriers of one channel. This requires the development of nonlinear predistortion systems at transmitting ground stations, as well as equalizers at receiving stations.

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多频卫星通信信道的仿真

用户数量的增加和传输的信息量的增加要求增加卫星通信系统的容量。这可以通过使用高阶信号星座、信道空间分离、有效的抗噪声代码来实现。此外，新标准要求有效地使用非线性功率放大器，必须在接近饱和的情况下工作。令人感兴趣的是，由于转发器信道中的多频率模式，卫星通信系统的容量增加。本文揭示了通道结构，详细描述了输入和输出多路复用器、非线性放大器、混频器和本地振荡器。给出了应答信道和地面站多频信号的计算机模型结构。仿真结果表明，多频模式会给单信道载波带来额外的互调失真。这就要求在发射地面站发展非线性预失真系统，并在接收站发展均衡器。

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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2020 Moscow Workshop on Electronic and Networking Technologies (MWENT)

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