Optimal interference pre-cancellation order in DPC-based broadcast and unicast hybrid network

Author

Hongxiang Li ; Siqian Liu ; Gudaitis, Michael S.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Louisville, Louisville, KY, USA

fYear

2013

fDate

20-22 March 2013

Firstpage

1

Lastpage

6

Abstract

It is well known that the Dirty Paper Coding (DPC) achieves the channel capacity for multiuser degraded channels. However, the optimality of DPC remains unknown for nondegraded channel. In this paper, we derive the optimal interference pre-cancellation order for a DPC based broadcast and unicast hybrid network. Specifically, we study different DPC cancellation schemes to maximize the hybrid capacity region. The conditions for each scheme being optimal are analytically derived. Our results show that the optimal interference precancellation order varies with SNR and broadcast and unicast channel conditions.

Keywords

broadcast communication; channel capacity; encoding; interference suppression; multiuser channels; radiocommunication; radiofrequency interference; DPC based broadcast-unicast hybrid network; DPC cancellation schemes; channel capacity; dirty paper coding; hybrid capacity region; multiuser degraded channel; nondegraded channel; optimal interference precancellation order; Interference cancellation; Receivers; Signal to noise ratio; Time division multiplexing; Transmitters; Unicast; DPC; broadcast; hybrid network; interference cancellation; unicast;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems (CISS), 2013 47th Annual Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-4673-5237-6

Electronic_ISBN

978-1-4673-5238-3

Type

conf

DOI

10.1109/CISS.2013.6552295

Filename

6552295