Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems
Joint Authors
Johansson, Mikael
Soldati, Pablo
Fodor, Gábor
Source
International Journal of Digital Multimedia Broadcasting
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-01-28
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Electronic engineering
Information Technology and Computer Science
Topics
Abstract EN
We consider the problem of setting the uplink signal-to-noise-and-interference (SINR) target and allocating transmit powers for mobile stations in multicell spatial multiplexing wireless systems.
Our aim is twofold: to evaluate the potential of such mechanisms in network multiple input multiple output (MIMO) systems, and to develop scalable numerical schemes that allow real-time near-optimal resource allocation across multiple sites.
We formulate two versions of the SINR target and power allocation problem: one for maximizing the sum rate subject to power constraints, and one for minimizing the total power needed to meet a sum-rate target.
To evaluate the potential of our approach, we perform a semianalytical study in Mathematica using the augmented Lagrangian penalty function method.
We find that the gain of the joint optimum SINR setting and power allocation may be significant depending on the degree of fairness that we impose.
We develop a numerical technique, based on successive convexification, for real-time optimization of SINR targets and transmit powers.
We benchmark our procedure against the globally optimal solution and demonstrate consistently strong performance in realistic network MIMO scenarios.
Finally, we study the impact of near optimal precoding in a multicell MIMO environment and find that precoding helps to reduce the sum transmit power while meeting a capacity target.
American Psychological Association (APA)
Fodor, Gábor& Johansson, Mikael& Soldati, Pablo. 2010. Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems. International Journal of Digital Multimedia Broadcasting،Vol. 2010, no. 2010, pp.1-17.
https://search.emarefa.net/detail/BIM-457526
Modern Language Association (MLA)
Fodor, Gábor…[et al.]. Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems. International Journal of Digital Multimedia Broadcasting No. 2010 (2010), pp.1-17.
https://search.emarefa.net/detail/BIM-457526
American Medical Association (AMA)
Fodor, Gábor& Johansson, Mikael& Soldati, Pablo. Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems. International Journal of Digital Multimedia Broadcasting. 2010. Vol. 2010, no. 2010, pp.1-17.
https://search.emarefa.net/detail/BIM-457526
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-457526