通信系统发送端和接收端的采样偏差是造成系统性能恶化的原因，由于OTFS系统在发送端和接收端需要使用码元波形，本文通过理论推导和不同调制方式的仿真分析OTFS系统在使用高斯脉冲码元波形时采样偏差对系统性能影响。仿真结果表明，采样偏差的影响随着调制方式调制速率的增加呈现倍数级增长，与理论分析基本一致。
The sampling deviation on the transmitter and receiver of the communication system causes performance degradation. Thus the symbol waveform is needed in the transmitter and receiver of the OTFS system, Gaussian pulse is used in the system. The theoretical analysis and simulation on the system performance of the different modulation modes in the OTFS system using Gaussian pulse are presented in this paper. The simulation result indicates that the impression of the sampling deviation presents multiple level growth with the increasing rate of the modulation mode, which is identical with the theoretical analysis.
2025,47(10): 125-129 收稿日期：2023-4-19
DOI：10.3404/j.issn.1672-7649.2025.10.021
分类号：TN911
基金项目：船舶工业国防科技预研基金资助项目（6141B04050101）
作者简介：李欣（1982-），男，高级工程师，研究方向为机载通信系统
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