A decentralized downlink beamforming algorithm for multicell processing
Conference paper
Le, T. and Nakhai, M. 2012. A decentralized downlink beamforming algorithm for multicell processing. IEEE Global Communications Conference (GLOBECOM 2012). Anaheim, CA, USA 03 - 07 Dec 2012 IEEE. pp. 3924-3929 https://doi.org/10.1109/GLOCOM.2012.6503729
Type | Conference paper |
---|---|
Title | A decentralized downlink beamforming algorithm for multicell processing |
Authors | Le, T. and Nakhai, M. |
Abstract | In this paper, we tackle the problem of intercell-interference in the absence of cooperation amongst base stations (BSs). The problem originates from the simultaneous transmissions of several BSs to their local users within their corresponding cells using the same frequency band. We propose a decentralized downlink beamforming scheme in cellular interference channels so that individual BSs can independently design their own beamforming vectors based on the locally attainable second order statistical channel state information at each BS. In this scheme, while each BS minimizes a combination of its total transmit power and the resulting total interference on the other vulnerable users of the adjacent cells, it assures that certain targeted signal-to-interference-plus-noise ratio (SINR) levels are achieved at its local users. Using the reciprocity of wireless network and the uplink-downlink duality, we develop a fast-converging iterative algorithm for downlink transmissions by distributed BSs. Finally, we derive a feasibility condition for the existence of a unique solution to the proposed optimization problem. This condition can be used to develop a scheduling algorithm for choosing a set of feasible users within each cell. Simulation results confirm the effectiveness of the proposed decentralized algorithm in closely following the performance curve of its centralized counterpart. |
Conference | IEEE Global Communications Conference (GLOBECOM 2012) |
Page range | 3924-3929 |
Proceedings Title | 2012 IEEE Global Communications Conference (GLOBECOM) |
Series | IEEE Global Communications Conference |
ISSN | 1930-529X |
Electronic | 1930-529X |
ISBN | |
Hardcover | 9781467309202 |
Electronic | 9781467309219 |
Electronic | 9781467309196 |
Publisher | IEEE |
Publication dates | |
03 Dec 2012 | |
Online | 22 Apr 2013 |
Publication process dates | |
Deposited | 08 Jun 2015 |
Output status | Published |
Digital Object Identifier (DOI) | https://doi.org/10.1109/GLOCOM.2012.6503729 |
Web of Science identifier | WOS:000322375104047 |
Web address (URL) of conference proceedings | https://ieeexplore.ieee.org/xpl/conhome/6490098/proceeding |
Language | English |
Book title | 2012 IEEE Global Communications Conference (GLOBECOM) |
https://repository.mdx.ac.uk/item/85951
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