A power-efficient coverage scheme for cell-edge users using cognitive beamforming

Conference paper

Zarrebini-Esfahani, A., Le, T. and Nakhai, M. 2013. A power-efficient coverage scheme for cell-edge users using cognitive beamforming. IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). London, UK 08 - 11 Sep 2013 IEEE. pp. 3028-3032 https://doi.org/10.1109/PIMRC.2013.6666666
TypeConference paper
TitleA power-efficient coverage scheme for cell-edge users using cognitive beamforming
AuthorsZarrebini-Esfahani, A., Le, T. and Nakhai, M.
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.

KeywordsCognitive radio; beamforming; intercell interference; semidefinite programming
ConferenceIEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Page range3028-3032
Proceedings Title2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
ISSN2166-9570
2166-9589
ISBN
Electronic9781467362351
PublisherIEEE
Publication dates
Print08 Sep 2013
Online25 Nov 2013
Publication process dates
Deposited05 Jun 2015
Output statusPublished
Digital Object Identifier (DOI)https://doi.org/10.1109/PIMRC.2013.6666666
Web of Science identifierWOS:000346481203021
Web address (URL) of conference proceedingshttps://ieeexplore.ieee.org/xpl/conhome/6656121/proceeding
LanguageEnglish
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