Impact of Channel Models on the End-to-End Performance of mmWave Cellular Networks

Communication at mmWave frequencies is one of the major innovations of the fifth generation of cellular networks, because of the potential multi-gigabit data rate given by the large amounts of available bandwidth. The mmWave channel, however, makes reliable communications particularly challenging, given the harsh propagation environment and the sensitivity to blockage. Therefore, proper modeling of the mmWave channel is fundamental for accurate results in system simulations of mmWave cellular networks. Nonetheless, complex models, such as the 3GPP channel model for frequencies above 6 GHz, may introduce a significant overhead in terms of computational complexity. In this paper we investigate the trade offs related to the accuracy and the simplicity of the channel model in end-to-end network simulations, and the impact on the performance evaluation of transport protocols.Comment: 6 pages, 3 figures. To be presented at IEEE SPAWC 2018, Kalamata, Greece, June 201

Applicability Limits of Simplified Human Blockage Models at 5G mm-Wave Frequencies

This paper analyzes the feasibility of using a simple diffraction model to compute the blocking of the human body to millimeter wave radio frequencies in indoor environments. The model makes a set of approximations that are evaluated to determine the applicability limits of such simplified approach, in particular for the human body blockage case. The work presented here: (1) describes briefly the mathematical support that is used to model the concealment using the Knife-Edge model, (2) identifies the potential simplifications applicable to the mathematical model implementation that allow a 3D geometric human body to be modelled with simple 2D shapes, (3) characterizes the polarization influence on the mm-wave blocking for such simplified human body models.This work was supported by the H2020 Marie Curie program, with project grant no: 766231 WAVECOMBEITN-2017Romero-Peña, JS.; Cardona Marcet, N. (2019). Applicability Limits of Simplified Human Blockage Models at 5G mm-Wave Frequencies. IEEE. 1-5. http://hdl.handle.net/10251/1319941