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International Journal of Antennas and Propagation
Volume 2016, Article ID 4796474, 11 pages
http://dx.doi.org/10.1155/2016/4796474
Research Article

Hierarchical Precoding in a Realistic Ultradense Heterogeneous Environment Exceeding the Degrees of Freedom

1Information Engineering and Technology, German University in Cairo, Cairo, Egypt
2Fraunhofer Heinrich Hertz Institute, Berlin, Germany
3Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany

Received 19 February 2016; Revised 14 July 2016; Accepted 21 July 2016

Academic Editor: Giuseppe Castaldi

Copyright © 2016 Mohamed Shehata et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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