Analysis of SINR according to Elevation Angle in Earth Fixed Beam

Optimal Beamwidth for Maximizing Uplink Coverage Probability in Quasi Earth-Fixed LEO Satellite Communication System

“…However, despite this importance, only a few studies have discussed and analyzed the performance of QEFC satellites. The authors of [7] evaluated the throughput and reference signal received power with different beam-fixed time durations, and the authors of [8] evaluated different elevation angles' downlink signal-to-noise-plus-interference ratio (SINR). The evaluation results show that UEs have low communication quality at low elevation angles.…”

“…We analyze serving and interference power for each elevation angle by considering the antenna gain, antenna pattern, and large-scale fading. To improve the uplink coverage probability and solve the low SINR problem highlighted in [7,8], especially at low elevation angles, we propose the optimal beamwidth maximizing uplink coverage probability scheme. The proposed scheme maximizes uplink coverage probability with target SINR for QEFC LEO satellites by tuning beamwidth for different elevation angles.…”