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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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.
AbstractList 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.
Author Xitao Gong
Dartmann, G.
Ascheid, G.
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  surname: Ascheid
  fullname: Ascheid, G.
  organization: Dept. of Integrated Signal Process. Syst., RWTH Aachen Univ., Aachen, Germany
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Snippet This paper presents a low complexity sub-optimal algorithm for the max-min beamforming problem in multicell multicast transmission. The beam pattern is jointly...
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StartPage 370
SubjectTerms Array signal processing
Complexity theory
Downlink
Interference
Optimization
Signal to noise ratio
Upper bound
Title Low complexity cooperative multicast beamforming in multiuser multicell downlink networks
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