A power-efficient coverage scheme for cell-edge users using cognitive beamforming
Zarrebini-Esfahani, Azar, Le, Tuan Anh ORCID: https://orcid.org/0000-0003-0612-3717 and Nakhai, Mohammad Reza
(2013)
A power-efficient coverage scheme for cell-edge users using cognitive beamforming.
IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), 2013
.
pp. 3028-3032.
ISSN 2166-9570
[Article]
(doi:10.1109/PIMRC.2013.6666666)
Abstract
This paper addresses the problem of strong intercell interference on cell-edge users in conventional cellular networks by deploying cognitive cells within the vicinity of primary cell borders. The cognitive base stations serve primary cell-edge users within the cognitive cells. In return, the cognitive base stations are rewarded by the same spectrum allocated to the primary base stations to serve secondary users. We propose a strategy that is formulated as an optimization problem for the cognitive cell to minimize the total transmit power of the cognitive base station. This optimization problem is subjected to maintain a controlled level of interference at the primary outer-cell users falling outside of the cognitive cell and to assure required levels of signal-to-noise-plus-interference-ratio (SINR) at all primary cell-edge and secondary users within the cognitive cell. Simulation results confirm that the beamforming scheme in conjunction with the proposed cognitive structure lead to a significant reduction in overall power transmitted in the network.
Item Type: | Article |
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Research Areas: | A. > School of Science and Technology > Computer and Communications Engineering |
Item ID: | 16894 |
Useful Links: | |
Depositing User: | Tuan Le |
Date Deposited: | 05 Jun 2015 10:57 |
Last Modified: | 13 Oct 2016 14:35 |
URI: | https://eprints.mdx.ac.uk/id/eprint/16894 |
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