DocumentCode :
3595162
Title :
Bipartite network based multi-cell clustering scheme in randomly located CoMP systems
Author :
Bo Li ; Tiankui Zhang ; Zhimin Zeng
Author_Institution :
Beijing Key Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, China
fYear :
2014
Firstpage :
376
Lastpage :
380
Abstract :
Coordinated multiple point transmission (CoMP) technology becomes popular due to its potential for improving the performance of cell-edge UEs who undergo strong inter-cell interference (ICI). To fully exploit the potential CoMP gain, the appropriate method to converge cells into cluster is a prerequisite. However, the majority of existing research are based on theoretical hexagonal cell grid model solely. In this paper, a CoMP multi-cell clustering scheme which considers randomly located cellular network is proposed. In randomly located cells model, the layout of cells and UEs are generated via a Poisson Point Process (PPP). The proposed clustering scheme takes full account of both ICI suffered by UEs and cells distribution, by mapping the CoMP network onto a bipartite network, in which two types of nodes represent cells and UEs respectively, while edges are quantified to denote the channel gain. Meanwhile a projection method is introduced to project the bipartite network onto a Euclidean space where distance between UEs and cells is easily calculated. Finally the efficient K-mean method is utilized to extract nearby UEs and cells out of the space and form the clusters. The proposed scheme hardly incurs extra overheads since only UE´s large scale fading information is required. The simulation results demonstrate a considerable throughput gain attained by UEs over comparing algorithm.
Keywords :
Poisson distribution; cellular radio; radiofrequency interference; CoMP multicell clustering scheme; CoMP technology; Euclidean space; ICI; K-mean method; PPP; Poisson Point Process; bipartite network; cellular network; coordinated multiple point transmission; hexagonal cell grid model; intercell interference; multicell clustering scheme; randomly located CoMP systems; Complexity theory; Computer architecture; Fading; Interference; Layout; Microprocessors; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor, and Mobile Radio Communication (PIMRC), 2014 IEEE 25th Annual International Symposium on
Type :
conf
DOI :
10.1109/PIMRC.2014.7136193
Filename :
7136193
Link To Document :
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