6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Low Complexity Cooperative Multicast Beamforming in Multiuser Multicell Downlink Networks

Download45 downloads
  • @INPROCEEDINGS{10.4108/icst.crowncom.2011.245846,
        author={Guido Dartmann and Xitao Gong and Gerd Ascheid},
        title={Low Complexity Cooperative Multicast Beamforming in Multiuser Multicell Downlink Networks},
        proceedings={6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={5},
        keywords={low complexity max-min beamforming multiuser multicell beamforming multicast},
        doi={10.4108/icst.crowncom.2011.245846}
    }
    
  • Guido Dartmann
    Xitao Gong
    Gerd Ascheid
    Year: 2012
    Low Complexity Cooperative Multicast Beamforming in Multiuser Multicell Downlink Networks
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2011.245846
Guido Dartmann1,*, Xitao Gong1, Gerd Ascheid1
  • 1: RWTH-Aachen University
*Contact email: guido.dartmann@iss.rwth-aachen.de

Abstract

This paper presents a low complexity sub-optimal algorithm for the max-min beamforming problem in multicell multicast transmission. The beam pattern is jointly optimized for all users inside a cell in a multicell scenario such that the signal to interference plus noise ratio (SINR) of the worst users is maximized subject to a limited sum power. The presented algorithm is based on the Lagrangian dual problem of the downlink max-min beamforming problem. The SINR of the presented algorithm is very close to the SINR of the known solution based on the more complex semidefinite programming.