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Virtual Cell Beamforming in Cooperative Networks.
- Source :
- IEEE Journal on Selected Areas in Communications; Jun2014, Vol. 32 Issue 6, p1126-1138, 13p
- Publication Year :
- 2014
-
Abstract
- We study the coordinated transmission problem in cooperative cellular networks where a cluster of base stations forms a <bold>virtual cell</bold> to serve a mobile station (MS). The performance of such an MS-centric virtual cell network is dictated by the beamformer that enables to suppress interference; however, designing a beamformer is highly challenging due to the coupled nature of interference and desired signals under arbitrarily formed virtual cells. We develop a new formulation of the beamforming problem for sum-rate maximization in virtual cell networks and analyze the structure of its optimal solutions. Based on this analysis, we develop a beamforming algorithm that can balance between desired signal maximization and interference minimization, so as to maximize the sum-rate. We show through extensive simulations that our <bold>balanced beamforming</bold> algorithm mitigates edge user effect and outperforms existing algorithms in various scenarios where virtual cells are allowed to overlap. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 07338716
- Volume :
- 32
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Journal on Selected Areas in Communications
- Publication Type :
- Academic Journal
- Accession number :
- 97237702
- Full Text :
- https://doi.org/10.1109/JSAC.2014.2328392