A CSGC algorithm based partial spectrum sharing scheme in cognitive LTE-A two-tier heterogeneous networks

In order to handle the cross-tier and co-tier interference effectively for LTE-A two-tier heterogeneous network, we propose a CSGC algorithm based partial spectrum sharing scheme using cognitive radio (CR) technique. In this paper, Radio resources are divided into three parts: macro-dedicated part, shared part and femto-dedicated part. Simulation result shows that the proposed scheme not only solves the two-tier interference but also improves the performance of the edge users. Moreover, we can set the portion of the dedicated-spectrum to maximize the system benefit.