Channel allocation algorithm for novel polarization tracking free Ku-band mobile satellite communication systems

We have developed a new channel allocation algorithm for use with a new Ku-band mobile satellite communication system that is being developed as a separate piece of work [1]. The system enables new earth stations to use a low cost polarization tracking free antenna. To expand system flexibility, the new earth stations and conventional earth stations are hoped to share a satellite transponder. However, the problem is that the satellite transponder sharing significantly increases cross polarization interference. Our algorithm overcomes the problem. It takes into account station types and maintains assigned channels so as not to increase cross polarization interference and to reduce wasteful bandwidth gaps in the satellite transponder. We simulated channel allocation under various traffic conditions on a computer in order to test our algorithm’s performance. The results showed that our algorithm can increase the accommodation number of stations and achieves a low cross polarization interference.