Abstract
To reduce the co-tier interference among femtocell base stations (FBSs) in ultra-dense networks (UDN), an interference-limited clustering and resource allocation (ILCRA) scheme is proposed, in which preset threshold is used to limit the number of FBS in each FBS cluster. Firstly, FBSs are divided into clusters, and the sum weights of interference in each FBS cluster can not exceed the preset threshold. Secondly, user equipment (UE) is clustered by exhaustive graph coloring algorithm in each FBS cluster. Then, the resources are allocated independently within each FBS cluster. Sub-channels are assigned according to the throughput of UE clusters on each sub-channel. Finally, the water-filling algorithm is performed to allocate power to UEs in each FBS cluster. The simulation results show that the proposed scheme effectively limits the number of FBS in each FBS cluster and improves system throughput and spectrum efficiency.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
