International Journal of Communication Systems, ( ISI ), Volume (1), No (1), Year (2014-6) , Pages (1-11)

Title : ( Cooperative beamforming and relay selection in cognitive radio systems )

Authors: Mohsen Abbasi , Hossein Khoshbin Ghomash ,

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In this paper, a new scheme is suggested for cooperative beamforming (BF) and relay selection in CR networks, where a pair of secondary users communicates with each other assisted by some multiple antenna relay nodes. The goal of the algorithm is to maximize signal to interference plus noise ratio of secondary user receiver subject to limited interference caused for primary user receiver and power constraints of relay nodes. The relay selection and BF optimization problem is solved separately by employing convex semidefinite programming through rank-one relaxation. It is shown that our proposed algorithm outperforms conventional relay selection and BF schemes.

Keywords

cognitive relay radio; semidefinite programming; cooperative beamforming; relay
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@article{paperid:1042709,
author = {Abbasi, Mohsen and Khoshbin Ghomash, Hossein},
title = {Cooperative beamforming and relay selection in cognitive radio systems},
journal = {International Journal of Communication Systems},
year = {2014},
volume = {1},
number = {1},
month = {June},
issn = {1074-5351},
pages = {1--11},
numpages = {10},
keywords = {cognitive relay radio; semidefinite programming; cooperative beamforming; relay selection},
}

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%0 Journal Article
%T Cooperative beamforming and relay selection in cognitive radio systems
%A Abbasi, Mohsen
%A Khoshbin Ghomash, Hossein
%J International Journal of Communication Systems
%@ 1074-5351
%D 2014

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