%0 Journal Article
%A JIA Wen-jie
%A LI Xiao-jing
%A TIAN Xin-ji
%A XU Yan-ping
%A ZHANG Chang-sen
%T An Improved Clustering and Resource Allocation Scheme for Ultra-Dense Networks
%D 2019
%R 10.13190/j.jbupt.2018-095
%J Journal of Beijing University of Posts and Telecommunications
%P 77-82
%V 42
%N 2
%X An improved clustering and resource allocation scheme was proposed for ultra-dense network in order to reduce the interference among small cells. Firstly, a loss graph was constructed according to the path loss among the small base stations, and the cluster head was selected based on the loss graph. Small base stations with the smaller sum of path loss were divided into the one cluster in which the number of small base stations was no more than the number of subchannels. Then, orthogonal subchannels were allocated to users in each cluster according to the signal to interference plus noise ratio on each subchannel of each user in the cluster. Finally, power allocation was optimized to improve throughput. Simulation results show that compared with the existed schemes in the same scenario, the small base stations are more evenly distributed in each cluster, so that the system throughput is improved significantly.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2018-095