Spectrum Demand Estimation Model for NGSO Communication Systems Considering Time Delay Constraints and Different Spectrum Access Strategies

In this paper, a new model to estimate spectrum demand for NGSO satellite communication systems is proposed. Such model introduces different spectrum access strategies to evaluate system capacity and spectrum demand. Moreover, time delay is firstly considered as a QoS factor for the NGSO satellite communication systems spectrum estimation model. Based on the above, taking O3b satellite system as example, an optimal access strategy is found to minimum the system capacity. Correspondingly, the calculated spectrum demand can be considered as a low limit.