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Enhanced Synchronization of 5G integrated Satellite Systems in Multipath Channels

机译：增强多径通道中的5G集成卫星系统的同步

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The 5G integrated satellite communication (SatCom) aims to provide scalable, and high-capacity services with wide coverage. However, complex satellite channel characteristics such as high timing offset and frequency offset make system synchronization difficult. Orthogonal frequency division multiplexing (OFDM), which is the fundamental waveform of the fifth-generation mobile communication (5G), is adopted in the integrated systems. In this paper, we first propose a multi-symbol merging blind timing algorithm based on the cyclic prefix (CP) to improve the accuracy of timing. Then, an enhanced synchronization scheme is proposed to realize precise time-frequency error correction in an integrated communication scenario. Simulation results show that multi-symbol merging timing performs better than single-symbol way under low signal to noise ratio (SNR) conditions. Further, good performance of bit error ratio (BER) is realized by the proposed timing and frequency synchronization scheme.
机译：5G集成卫星通信（SATCOM）旨在提供具有宽覆盖范围的可扩展性和高容量服务。但是，复杂的卫星信道特性，如高时序偏移和频率偏移使系统同步难以。在集成系统中采用正交频分复用（OFDM），即第五代移动通信（5G）的基本波形，在集成系统中采用。在本文中，我们首先提出了一种基于循环前缀（CP）的多符号合并盲时算法，以提高定时的准确性。然后，提出了增强的同步方案来实现集成通信场景中精确的时频误差校正。仿真结果表明，多符号合并时序在低信噪比（SNR）条件下比单符号方式更好地执行。此外，通过所提出的定时和频率同步方案实现误差比（BER）的良好性能。

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