TY - JOUR N2 - Massive multiple-input-multiple-output (MIMO) and beamforming are key technologies, which significantly influence on increasing effectiveness of emerging fifth-generation (5G) wireless communication systems, especially mobile-cellular networks. In this case, the increasing effectiveness is understood mainly as the growth of network capacity resulting from better diversification of radio resources due to their spatial multiplexing in macro- and micro-cells. However, using the narrow beams in lieu of the hitherto used cell-sector brings occurring interference between the neighboring beams in the massive-MIMO antenna system, especially, when they utilize the same frequency channel. An analysis of this effect is the aim of this paper. In this case, it is based on simulation studies, where a multi-elliptical propagation model and standard 3GPP model are used. We present the impact of direction and width of the neighboring beams of 5G new radio gNodeB base station equipped with the multi-beam antenna system on the interference level between these beams. The simulations are carried out for line-of-sight (LOS) and non-LOS conditions of a typical urban environment. L1 - http://www.czasopisma.pan.pl/Content/113739/PDF/3_2020.pdf L2 - http://www.czasopisma.pan.pl/Content/113739 PY - 2020 IS - No 1 EP - 23 DO - 10.24425/ijet.2019.130260 KW - 5G systems & networks KW - interference KW - massive-MIMO KW - multi-elliptical propagation model KW - multi-beam antenna system KW - simulation studies A1 - Kelner, Jan M. A1 - Ziółkowski, Cezary PB - Polish Academy of Sciences Committee of Electronics and Telecommunications VL - vol. 66 DA - 2020.02.20 T1 - Interference in Multi-beam Antenna System of 5G Network SP - 17 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/113739 T2 - International Journal of Electronics and Telecommunications ER -