NirvaWave: An Accurate and Efficient Near Field Wave Propagation Simulator for 6G and Beyond

arXiv - EE - Signal Processing Pub Date : 2024-09-17 DOI:arxiv-2409.11293

Vahid Yazdnian, Yasaman Ghasempour

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Abstract

The extended near-field range in future mm-Wave and sub-THz wireless networks demands a precise and efficient near-field channel simulator for understanding and optimizing wireless communications in this less-explored regime. This paper presents NirvaWave, a novel near-field channel simulator, built on scalar diffraction theory and Fourier principles, to provide precise wave propagation response in complex wireless mediums under custom user-defined transmitted EM signals. NirvaWave offers an interface for investigating novel near-field wavefronts, e.g., Airy beams, Bessel beams, and the interaction of mmWave and sub-THz signals with obstructions, reflectors, and scatterers. The simulation run-time in NirvaWave is orders of magnitude lower than its EM software counterparts that directly solve Maxwell Equations. Hence, NirvaWave enables a user-friendly interface for large-scale channel simulations required for developing new model-driven and data-driven techniques. We evaluated the performance of NirvaWave through direct comparison with EM simulation software. Finally, we have open-sourced the core codebase of NirvaWave in our GitHub repository (https://github.com/vahidyazdnian1378/NirvaWave).

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NirvaWave：适用于 6G 及更高频率的精确高效近场波传播模拟器

未来毫米波和 sub-THz 无线网络的近场范围扩大，需要精确高效的近场信道模拟器来了解和优化这一探索较少的系统中的无线通信。本文介绍了基于标度衍射理论和傅立叶原理的新型近场信道模拟器 NirvaWave，它能在用户自定义的传输电磁信号下，在复杂的无线介质中提供精确的波传播响应。NirvaWave 提供了一个界面，用于研究新型近场波面，例如艾里波束、贝塞尔波束，以及毫米波和次 THz 信号与障碍物、反射器和散射体之间的相互作用。与直接求解麦克斯韦方程的电磁软件相比，NirvaWave 的仿真运行时间要低几个数量级。因此，NirvaWave 为开发新的模型驱动和数据驱动技术所需的大规模信道仿真提供了用户友好的界面。我们通过与电磁仿真软件的直接比较评估了 NirvaWave 的性能。最后，我们在 GitHub 存储库中开源了 NirvaWave 的核心代码库 (https://github.com/vahidyazdnian1378/NirvaWave)。

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arXiv - EE - Signal Processing

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