Resource Allocation for LEO Beam-Hopping Satellites in a Spectrum Sharing Scenario

Multi-beam Satellite Resource Allocation Optimization for Beam Hopping Transmission

Multi-beam satellite systems have been studied a lot in the last ten years. They have many promising features like power gain, interference reduction, high flexibility to adapt the asymmetric traffic distribution, and the improvement of the system capacity compared with single-beam systems. In multi-beam satellite systems, the beamforming antenna can generate a number of spot beams over the cov...

Distributed Dynamic Spectrum Allocation for Secondary Users in a Vertical Spectrum Sharing Scenario

In this paper, we study the problem of distributed spectrum allocation under a vertical spectrum sharing scenario in a cognitive radio network. The secondary users share the spectrum licensed to the primary user by observing the activity statistics of the primary users, and regulate their transmission strategy in order to abide by the spectrum sharing etiquette. When the primary user is inactiv...

RSVP for LEO satellites

The Internet Engineering Task Force (IETF) is working on extending the traditional TCP/IP model for supporting multimedia and real-time applications on the Internet. Thus, new protocols have been developed such as the Resource Reservation Protocol (RSVP). At the same time, there has been a growing interest in using Low Earth Orbit (LEO) satellites. In the near future, when the Internet with mul...

Beam Patterns of Low Frequency Radio Antennas using LEO Satellites

Service multiplexing and resource allocation in S-CDMA LEO systems