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Clustering for coordinated zero-forcing beamforming in multiusers interference network
HE Shengjie #,CHUAI Gang *
School of information and communication Enginnering, Beijing University of Posts and Telecommunications, Beijing 100876
*Correspondence author
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Funding: none
Opened online:16 November 2015
Accepted by: none
Citation: HE Shengjie,CHUAI Gang.Clustering for coordinated zero-forcing beamforming in multiusers interference network[OL]. [16 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4660608
 
 
Traditional Zero-Forcing algorithm can eliminate the network interference effectively in small scale interference network. However, with the increasing number of users in practical communication system, this algorithm is not applicable any more. Due to lack of enough antennas, the channel matrix fails to provide sufficient dimensions to isolate the interference. In this paper, we design a clustering strategy for coordinated Zero-Forcing Beamforming (CZF) in multiusers interference network to improve it. Efficient clustering algorithm is derived to put users in disjoint clusters where CZF is applied to users within each cluster and the intercluster interference can almost be negligible compared to the whole network interference. Simulation results show that the proposed scheme enhances the capacity of network by 300% and the convergence within three iterations respectively.
Keywords:multiusers interference network;clustering;coordinated zero-forcing;sum-rate
 
 
 

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