  In this paper, we present the findings of a study conducted to assess the
coexistence of Fifth Generation (5G) wireless networks and Fixed Satellite
Station (FSS) receivers in the C-Band (3300-4200 MHz) in India. Through
simulations, we evaluate the coexistence feasibility and calculate the minimum
separation distances required to mitigate interference, consider-ing factors
such as 5G Base Station power, off-axis angle, clutter, filtering, and
shielding. Next, we present various interference mitigation techniques,
including distance, antenna tilt and height, power control, antenna design,
coordination, filtering, and others, aiming for balanced coexistence. The
simulation results corroborate the efficacy of these solutions in containing
interference from 5G in the C-Band FSS receivers. The paper offers valuable
insights into frequency allocation in India and considerations for 5G network
design, including site selection and antenna orientation. The insights provided
are relevant to other regions facing similar coexistence challenges. Overall,
this paper offers a comprehensive overview of 5G and FSS coexistence in the
C-band, emphasising the importance of addressing this issue during network
design and deployment.
