On the Degrees of Freedom of Interference Alignment for Multicell MIMO Interfering Broadcast Channels
Author
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-09
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The interference alignment (IA) is a promising technique to efficiently mitigate interference andto enhance capacity of a wireless network.
This paper proposes an interference alignment scheme fora cellular network with L cells and K users under a multiple-input multiple-output (MIMO) Gaussianinterfering broadcast channel (IFBC) scenario.
The proposed IA scheme aligns intercell interferences(ICI) into a small dimensional subspace through a cooperative receive beamforming and cancelsboth the ICI and interuser interferences (IUI) simultaneously through a transmit beamforming.
Wecharacterize the feasibility condition for the proposed IA to achieve a total number of degrees offreedom (DoF) of LK in terms of the numbers of transmit antennas and receive antennas.
Then wederive the maximum number of DoF achieved by the proposed IA by finding an optimal dimensionof ICI alignment subspace for a given antenna configuration.
The numerical results show that theproposed IA scheme has a better DoF performance than the conventional schemes.
American Psychological Association (APA)
Choi, Hyun-Ho. 2014. On the Degrees of Freedom of Interference Alignment for Multicell MIMO Interfering Broadcast Channels. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1051224
Modern Language Association (MLA)
Choi, Hyun-Ho. On the Degrees of Freedom of Interference Alignment for Multicell MIMO Interfering Broadcast Channels. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1051224
American Medical Association (AMA)
Choi, Hyun-Ho. On the Degrees of Freedom of Interference Alignment for Multicell MIMO Interfering Broadcast Channels. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1051224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1051224