AEU - International Journal of Electronics and Communications, Volume (1), No (1), Year (2015-4) , Pages (1-14)

Title : ( Z-interference channel with side information at the transmitters )

Authors: hamed fehri , Hossein Khoshbin Ghomash ,

Citation: BibTeX | EndNote

In this paper, channel coding strategies for the problem of communication over a two-user Z-interference channel (ZIC) in the presence of non-causal side information (NSI) at transmitters are presented. First, an achievable rate region for the general discrete memoryless ZIC-NSI is derived using rate splitting technique, superposition coding, Gel’fand–Pinsker-type binning scheme and joint typicality decoding. Next, the capacity region of a special case of the orthogonal ZIC-NSI is characterized. Then, the Gaussian version of the channel called the Gaussian Doubly Dirty ZIC (GDD-ZIC) is defined and a general outer bound to the capacity region of the GDD-ZIC is presented. After that, an inner bound for the sum-capacity of the channel using Costa's dirty paper coding is derived and thereby it is shown that Costa's strategy cannot achieve any positive rates over the GDD-ZIC for the case of strong state-interference. Finally, lattice-based achievable rates for the GDD-ZIC are obtained. These lattice-based rates are independent of the state-interference powers and thus, lattice-strategies are able to achieve positive rates for the case of strong state-interference. Moreover, it is shown that lattice-strategies are optimal for a class of the GDD-ZIC.

Keywords

, Capacity bounds; Costa's strategy; Lattice strategy; Side information; Z, interference
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@article{paperid:1048073,
author = {Fehri, Hamed and Khoshbin Ghomash, Hossein},
title = {Z-interference channel with side information at the transmitters},
journal = {AEU - International Journal of Electronics and Communications},
year = {2015},
volume = {1},
number = {1},
month = {April},
issn = {1434-8411},
pages = {1--14},
numpages = {13},
keywords = {Capacity bounds; Costa's strategy; Lattice strategy; Side information; Z-interference channel},
}

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%0 Journal Article
%T Z-interference channel with side information at the transmitters
%A Fehri, Hamed
%A Khoshbin Ghomash, Hossein
%J AEU - International Journal of Electronics and Communications
%@ 1434-8411
%D 2015

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