arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2504.09751cs.NIeess.SP
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加速基于射线追踪的无线信道生成以实现实时网络数字孪生

Accelerating Ray Tracing-Based Wireless Channels Generation for Real-Time Network Digital Twins

Cláudio Modesto, Lucas Mozart, Pedro Batista, André Cavalcante, Aldebaro Klautau

AI总结:

针对网络数字孪生中射线追踪计算成本高的问题,提出3D场景预处理简化和RT结果后处理增强方法,在不损害多径参数准确性的前提下将仿真时间减少50%以上。

摘要:

射线追踪(RT)仿真是一种广泛使用的方法,用于在网络数字孪生等应用中实现无线信道建模。然而,执行射线追踪(RT)的计算成本与所采用的3D场景中的细节水平等因素成正比。本工作提出了RT预处理算法,旨在通过缩减场景区域和/或简化场景中的物体形状来简化3D场景,同时不使信道失真。本工作还提出了一种后处理方法,用于增强一组RT结果以实现改进的时间分辨率。这些方法使得RT能够用于使用详细且照片级逼真的3D场景的应用中,同时随时间生成一致的无线信道。我们在不同城市场景规模(以面积和物体细节衡量)下的仿真结果表明,可以在不损害多径RT参数(如到达角与离开角、时延、相位和路径增益)准确性的情况下,将仿真时间减少50%以上。

英文摘要:

Ray tracing (RT) simulation is a widely used approach to enable modeling wireless channels in applications such as network digital twins. However, the computational cost to execute ray tracing (RT) is proportional to factors such as the level of detail used in the adopted 3D scenario. This work proposes RT pre-processing algorithms that aim at simplifying the 3D scene without distorting the channel, by reducing the scenario area and/or simplifying object shapes in the scenario. It also proposes a post-processing method that augments a set of RT results to achieve an improved time resolution. These methods enable using RT in applications that use a detailed and photorealistic 3D scenario while generating consistent wireless channels over time. Our simulation results with different urban scenarios scales, in terms of area and object details, demonstrate that it is possible to reduce the simulation time by more than 50% without compromising the accuracy of the multipath RT parameters, such as angles of arrival and departure, delay, phase, and path gain.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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