Simulation Research on the Designed Physical Layer of Satellite Return Link Based on DVB-RCS2

2022 IEEE 8th International Conference on Computer and Communications (ICCC) Pub Date : 2022-12-09 DOI:10.1109/ICCC56324.2022.10065658

Jingwen Zhu, Jie Wang, Ming Chen, Zhaohui Tao, Xiangyuan Tang, Qingsheng Xue

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Abstract

The physical layer of satellite return link is studied in this work based on the latest version of the second generation return channel satellite for digital video broadcasting (DVB-RCS2). The satellite return link with linear modulation is designed and the experimental simulation of the burst error rate (BER) performance is carried out in this work. Based on the built satellite return link, the waveform performance that is not given in the specification is further simulated and complemented. Then, the link with direct-sequence spread as specified in the standard is simulated. The BER performance of the link with spread spectrum is compared with that of the original link The results proposes that the performance is related to the spreading factor: each time the spreading factor is doubled, the BER performance is improved by 3dB. Furthermore, experiments based on typical Rice channel are also carried out. The Rice factor is set to be 17dB referring to the specification, and the simulation results reveal narrow difference of 0.05dB compared with additional white gaussian noise (AWGN) channel. The research content of this paper will complement the waveform performance not given in the specification, fill the performance deficiency of spreading and verify the consistency of the satellite channel and the specification, which will lay a good foundation for the further research and application of the specification.

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基于DVB-RCS2的卫星返回链路物理层设计仿真研究

本文基于最新版本的第二代数字视频广播回程卫星(DVB-RCS2)，对卫星回程链路物理层进行了研究。设计了具有线性调制的卫星返回链路，并对其突发误码率性能进行了实验仿真。基于已建成的卫星返回链路，对规范中未给出的波形性能进行了进一步仿真和补充。然后，对标准中规定的具有直接序列扩展的链路进行了仿真。将扩频链路的误码率性能与原链路的误码率性能进行了比较，结果表明，性能与扩频因子有关，扩频因子每增加一倍，误码率性能提高3dB。此外，还进行了基于典型水稻通道的试验。参考规范将Rice因子设置为17dB，仿真结果表明，与附加高斯白噪声(AWGN)通道相比，Rice因子差值仅为0.05dB。本文的研究内容将补充规范中未给出的波形性能，填补扩频的性能不足，验证卫星信道与规范的一致性，为规范的进一步研究和应用奠定良好的基础。

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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2022 IEEE 8th International Conference on Computer and Communications (ICCC)

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