UC Irvine

Satellite-based broadband communication has experienced increased growth in Communications on the Move (COTM) platforms such as maritime, commercial aviation, and government aviation. COTM antennas must address the challenge of offering a desired data rate to users using wide beam satellites which are disadvantaged with low gain and asymmetric gain patterns. The new High Throughput Satellite (HTS) designs have large numbers of small spot beams, reuse frequency across the beams, and offer higher EIRP and G/T to address the challenges encountered by COTM. Satellite resources, mainly power and bandwidth, need to be allocated to meet the peak capacity demand in each of the HTS beam rather than the sum of the capacity demand in all HTS beams. This typically results in a larger capacity requirement to satisfy.

The researcher proposes a ground-based solution to plan transmission in HTS beams and dynamically adapt parameters such as bandwidth and transmission power in an HTS equipped with Multi Port Amplifier (MPA) such that the demand for the capacity that changes with time can be met in real time. At any given time, the available power and bandwidth can be assigned to a beam based on its demand by varying the input power levels. Since the conventional transmission in satellite service is fixed and based on the peak demand in each beam, this solution will reduce the satellite resources required to meet the capacity demand and significantly benefit COTM services.