Research of spectrum sharing method based on channel heterogeneity

In this paper, channel heterogeneity´s characteristics embodied in the transmission distance and interference distance. The paper calculates a difference frequency signal transmission distance loss, and defines the different channel which can support transmission and interference distance. The paper has got the spectrum sharing by simulations in the targets of maximum number of connections, minimum BFP and maximum channel capacity. Due to the introduction of the channel inhomogeneity, channel heterogeneity makes spectrum allocation in some cases changed, and the introduction of channel heterogeneity can improve cognitive radio network performance in the channel capacity, frequency reuse and reduce interference.