Research Article
Low Complexity Cooperative Multicast Beamforming in Multiuser Multicell Downlink Networks
@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
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.
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