2021 Volume 10 Issue 6 Pages 337-342
This letter evaluates inter-system interference reduction effect by the adaptive bandwidth control method for a spectrum sharing multi-band system according to the bands used by an interfered system, the inter-system power ratio of spectrum sharing systems, and interference power from unknown external systems. The method adaptively selects bandwidth control bands among allocated multiple bands to effectively reduce out-of-band distortion noise which interferes to other spectrum sharing systems. The evaluation results clarify appropriate band selection for interfered system band position, and show the effective range of the method to inter-system power ratios and unknown external system interference.
