Diffuse-Scattering-Informed Geometric Channel Modeling for THz Wireless Communications Systems
Diffuse-Scattering-Informed Geometric Channel Modeling for THz Wireless Communications Systems
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DOI：
10.1109/tap.2023.3307868
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发表时间：
2023-10
影响因子：
5.7
通讯作者：
L. Azpilicueta;A. Schultze;M. Celaya-Echarri;F. A. Rodríguez-Corbo;C. Constantinou;R. Shubair;F. Fal
中科院分区：
文献类型：
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作者：
L. Azpilicueta;A. Schultze;M. Celaya-Echarri;F. A. Rodríguez-Corbo;C. Constantinou;R. Shubair;F. Fal
超过100-Gb/S数据吞吐量是第六代(6G)无线网络的关键目标和活跃的研究领域，只有利用太赫兹(THz)频段(0.3-10THz)才能达到这一目标。考虑到散射和分子吸收在这一频率范围内的新相关性，以及缺乏可靠的材料属性库，太赫兹通道建模面临着新的挑战。在这项工作中，我们通过系统地测量27种常见建筑和办公材料的介电特性来解决这些挑战，并报告了一种内部三维射线发射(3D-RL)算法，该算法使用创建的材质库并考虑了粗糙表面散射和大气衰减。为了验证所提算法的有效性，在300 GHz的典型室内环境中进行了信道测深仪的测量。模拟和测量显示出很好的一致性，表明需要对太赫兹波段的散射和大气吸收进行建模。所提出的信道模型方法能够通过仿真来研究THz频率下的场景，为超高速无线通信系统的开发提供相关知识。
Surpassing 100-Gb/s data throughput is a key objective and an active area of research for sixth-generation (6G) wireless networks that can only be met by exploiting the terahertz (THz) frequency band (0.3–10 THz). THz channel modeling faces new challenges given the emerging relevance of scattering and molecular absorption in this frequency range as well as the lack of a reliable library of material properties. In this work, we address these challenges by measuring systematically the dielectric properties of 27 common building and office materials and reporting an in-house 3-D ray-launching (3D-RL) algorithm that uses the created material library and accounts for rough surface scattering and atmospheric attenuation. In order to validate the proposed algorithm, a channel sounder measurement campaign has been performed in a typical indoor environment at 300 GHz. Simulations and measurements show good agreement, demonstrating the need for modeling scattering and atmospheric absorption in the THz band. The proposed channel model approach enables scenarios at THz frequencies to be investigated by simulation, providing relevant knowledge for the development of ultrahigh-speed wireless communication systems.