Reference : Distributed Multicell Beamforming with Limited Intercell Coordination
Scientific journals : Article
Engineering, computing & technology : Computer science
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/10993/7592
Distributed Multicell Beamforming with Limited Intercell Coordination
English
Huang, Yongming [> >]
Zheng, Gan mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Bengtsson, Mats [> >]
Wong, Kit [> >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Yang [> >]
Feb-2011
IEEE Transactions on Signal Processing
IEEE
59
2
728-738
Yes
International
1053-587X
[en] This paper studies distributed optimization schemes for multicell joint beamforming and power allocation in time-division-duplex (TDD) multicell downlink systems where only limited-capacity intercell information exchange is permitted. With an aim to maximize the worst-user signal-to-interference-and-noise ratio (SINR), we devise a hierarchical iterative algorithm to optimize downlink beamforming and intercell power allocation jointly in a distributed manner. The proposed scheme is proved to converge to the global optimum. For fast convergence and to reduce the burden of intercell parameter exchange, we further propose to exploit previous iterations adaptively. Results illustrate that the proposed scheme can achieve near-optimal performance even with a few iterations, hence providing a good tradeoff between performance and backhaul consumption. The performance under quantized parameter exchange is also examined.
Others
http://hdl.handle.net/10993/7592
10.1109/TSP.2010.2089621

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