2020/04/10 by Vitaly Petrov, Dmitri Moltchanov, Petrov, Vitaly +5 · 1 citation
Engineering · #Advanced MIMO Systems Optimization #Antenna Design and Analysis #FOS: Computer and information sciences #Millimeter-Wave Propagation and Modeling #Networking and Internet Architecture (cs.NI)
paper · pdf · doi:10.48550/arxiv.2004.05108
openalex publication_date 2020/04/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
User equipment mobility is one of the primary challenges for the design of\nreliable and efficient wireless links over millimeter-wave and terahertz bands.\nThese high-rate communication systems use directional antennas and therefore\nhave to constantly maintain alignment between transmitter and receiver beams.\nFor terahertz links, envisioned to employ radiation patterns of no more than\nfew degrees wide, not only the macro-scale user mobility (human walking, car\ndriving, etc.) but also the micro-scale mobility - spontaneous shakes and\nrotations of the device - becomes a severe issue. In this paper, we propose a\nmathematical framework for the first-order analysis of the effects caused by\nmicro-mobility on the capacity and outage in terahertz communications. The\nperformance of terahertz communications is compared with and without\nmicro-mobility illustrating the difference of up to 1 Tbit/s or 75%. In\nresponse to this gap, it is finally shown how the negative effects of the\nmicro-mobility can be partially addressed by a proper adjustment of the\nterahertz antenna arrays and the period of beam realignment procedure.\n