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

Path Loss, Angular Spread and Channel Sparsity Modeling for Indoor and Outdoor Environments at the sub-THz Band