## 3 Interference Scenarios and Parameters of Simulated Systems
Currently, there is no commercial equipment of 5G in the 6425-7125 MHz band, however, 3 GPP and ITU-R provided characteristics of the base stations in this band which can be found in Document 5D/716 Annex 4.4. of ITU-R and in 3 GPP TR 38.921 (2021-03) specifications. Table 2 provides characteristics of 5G BS that are used in simulations. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Parameter** & **Yamal 90E** & **Express 140E** & **Yamal 183E** \\ \hline Noise bandwidth (MHz) & 72 & 36 & 72 \\ Peak antenna gain (dBi) (satellite) & 32 & 22 & 32 \\ Antenna gain pattern beamwidth & Rec. ITU-R S.672, & Rec. ITU-R S.672, & Rec. ITU-R S.672, \\ (satellite) & LS \(=-25\), & LS \(=-25\), & LS \(=-25\), \\ Beamwidth: 4.5 & Beamwidth: 14 & Beamwidth: 4.5 \\ Receiver noise temperature (K) (satellite) & 500 & 500 & 500 \\ Peak transmit antenna gain (dBi) (uplink Earth station) & 50.8 & 55.5 & 51 \\ Antenna transmit gain pattern (uplink Earth station) & Rec. ITU-R 580-6 & Rec. ITU-R 580-6 & Rec. ITU-R 580-6 \\ Min power spectral density (dBW/Hz) & \(-55\) & \(-58\) & \(-64.1\) \\ (uplink Earth station) & \(-62.6\) & \(-62.6\) & \(-66.6\) \\ Min power spectral density (dBW/Hz) & \(-62.6\) & \(-62.6\) & \(-66.6\) \\ Antenna receive gain (dBi) (downlink Earth station) & 41.7 & 46.6 & 41.5 \\ Antenna receive gain pattern (downlink Earth station) & Rec. ITU-R 580-6 & Rec. ITU-R 580-6 & Rec. ITU-R 580-6 \\ Receiver noise temperature (K) & 120 & 120 & 130 \\ (downlink Earth station) & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Characteristics of the satellite transponders used in simulations. Among the enhancements of 5G NR compared to LTE is using beamforming technology, beamforming allows do electronic steering the direction of the main beam of the antenna pattern. The antenna patterns of 5G NR BS are presented in Figures 4 and 5. In simulations for each BS three multiple spatially directive signals are transmitted simultaneously in the direction of different UEs that are randomly distributed in the cell using a uniform distribution. The UEs which are served by each base station in the vertical coverage range should be considered to be served by the beam steered towards the maximum coverage angle, i.e., by the lower bound of the electrical beam. The minimum distance of UEs to each BS for urban, suburban, and rural deployments is 35 m. The antenna height of each UE is 1.5 m. \begin{table}
\begin{tabular}{c c c} \hline \hline
**Parameter** & **Suburban Macro** & **Urban Macro** \\ \hline Deployment density (BSs/km\({}^{2}\)) & 2.4 & 10 \\ Antenna height (m) & 20 & 18 \\ Sectorization & 3 sectors & 3 sectors \\ Channel bandwidth (MHz) & 100 & 100 \\ Network loading factor (base station load probability) & 20\% & 20\% \\ \multicolumn{3}{c}{RS TDD activity factor} & 75\% & 75\% \\ \multicolumn{3}{c}{Element gain (dBi)} & 6.4 & 5.5 \\ Antenna polarization & Linear \(\pm\) 45\({}^{\circ}\) & Linear \(\pm\) 45\({}^{\circ}\) \\ Antenna array configuration & 16 \(\times\) 8 elements & 16 \(\times\) 8 elements \\ \multicolumn{3}{c}{(Column \(\times\) Row)} & 16 \(\times\) 8 elements \\ \multicolumn{3}{c}{Base station horizontal coverage range (degrees)} & \(\pm\)60 & \(\pm\)60 \\ \multicolumn{3}{c}{Base station vertical coverage range (degrees)} & 90–100 & 90–100 \\ \multicolumn{3}{c}{Mechanical downtilt (degrees)} & 10 & 6 \\ \multicolumn{3}{c}{Maximum antenna gain (dBi)} & 27.4 & 26.5 \\ \multicolumn{3}{c}{Conducted power (before Ohmic loss) per antenna element (dBm)} & 22 & 22 \\ \multicolumn{3}{c}{Conducted power (before Ohmic loss) per antenna per polarization (dBm)} & 43 & 43 \\ \multicolumn{3}{c}{Conducted power (before Ohmic loss) per antenna (dBm)} & 46 & 46 \\ \multicolumn{3}{c}{Maximum EIRP density} & 73.4 & 72.5 \\ \multicolumn{3}{c}{(dBm/100 MHz)} & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Characteristics of 5G base stations used in simulations. Figure 3: Satellite footprints of the reviewed FSS victim receivers.