DocumentCode :
1779636
Title :
Explicit and almost sure conditions for K/2 degrees of freedom
Author :
Stotz, David ; Bolcskei, Helmut
Author_Institution :
Dept. IT & EE, ETH Zurich, Zurich, Switzerland
fYear :
2014
fDate :
June 29 2014-July 4 2014
Firstpage :
471
Lastpage :
475
Abstract :
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].
Keywords :
fractal antennas; matrix algebra; radiofrequency interference; wireless channels; DoF-optimal input distributions; Hochman; K-user; K/2 DoF; K/2 degrees of freedom; channel matrices; explicit conditions; fractal geometry; single-antenna interference channels; Entropy; Fractals; Information theory; Interference channels; Random variables; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory (ISIT), 2014 IEEE International Symposium on
Conference_Location :
Honolulu, HI
Type :
conf
DOI :
10.1109/ISIT.2014.6874877
Filename :
6874877
Link To Document :
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