In this paper, we present new measurement results to model large-scale path loss, angular spread and channel sparsity at the sub-THz (141-145 GHz) band, for both indoor and outdoor scenarios. Extensive measurement campaigns have been carried out, taking into account both line-of-sight (LoS) and non line-of-sight (NLoS) propagation. For all considered propagation scenarios, omni-directional and directional path loss models have been developed, based on the so-called close-in (CI) free-space reference distance model. Moreover, path loss modeling has been applied for the 2nd and 3rd strongest multipath components (MPCs), based on which path loss exponent and large-scale shadow fading estimates have been derived. A power angular spread analysis is further presented, using up to the 3rd strongest MPC. Finally, results on the sparsity of the wireless channel have also been presented by employing the so-called Gini index.

翻译：本文提出针对室内外场景下亚太赫兹频段（141-145 GHz）的大尺度路径损耗、角度扩展及信道稀疏性建模的新测量结果。基于视距（LoS）与非视距（NLoS）传播特性，开展了大规模测量实验。针对所有传播场景，采用所谓的近距离（CI）自由空间参考距离模型，建立了全向与定向路径损耗模型。进一步，针对第二、第三强多径分量（MPCs）应用路径损耗建模，据此推导了路径损耗指数与大尺度阴影衰落估计值。通过利用前三强多径分量，开展了功率角度扩展分析。最后，采用基尼指数（Gini index）呈现了无线信道稀疏性的相关结果。