Low complexity cooperative multicast beamforming in multiuser multicell downlink networks

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 user...

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Vydáno v:2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) s. 370 - 374
Hlavní autoři: Dartmann, G., Xitao Gong, Ascheid, G.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.06.2011
Témata:
Array signal processing
Complexity theory
Downlink
Interference
Optimization
Signal to noise ratio
Upper bound
ISBN:1457701405, 9781457701405
ISSN:2166-5370
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Shrnutí: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.
ISBN:1457701405
9781457701405
ISSN:2166-5370
DOI:10.4108/icst.crowncom.2011.245846