Explicit and almost sure conditions for K/2 degrees of freedom
It is well known that in K-user constant single-antenna interference channels K/2 degrees of freedom (DoF) can be achieved for almost all channel matrices. Explicit conditions on the channel matrix to admit K/2 DoF are, however, not available. The purpose of this paper is to identify such explicit c...
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Published in | 2014 IEEE International Symposium on Information Theory pp. 471 - 475 |
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Main Authors | , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.06.2014
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Subjects | |
Online Access | Get full text |
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Summary: | It is well known that in K-user constant single-antenna interference channels K/2 degrees of freedom (DoF) can be achieved for almost all channel matrices. Explicit conditions on the channel matrix to admit K/2 DoF are, however, not available. The purpose of this paper is to identify such explicit conditions, which are satisfied for almost all channel matrices. We also provide a construction of corresponding asymptotically DoF-optimal input distributions. The main technical tool used is a recent breakthrough result by Hochman in fractal geometry [1]. |
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ISSN: | 2157-8095 2157-8117 |
DOI: | 10.1109/ISIT.2014.6874877 |