Downlink beamforming design for cognitive cellular systems
Conference paper
Le, T. and Navaie, K. 2014. Downlink beamforming design for cognitive cellular systems. 2014 IEEE Wireless Communications and Networking Conference (WCNC). Istanbul, Turkey 06 - 09 Apr 2014 IEEE. pp. 1188-1193 https://doi.org/10.1109/WCNC.2014.6952318
Type | Conference paper |
---|---|
Title | Downlink beamforming design for cognitive cellular systems |
Authors | Le, T. and Navaie, K. |
Abstract | We propose a novel scheme to design downlink beamforming vectors in a cognitive cellular network which shares radio spectrum with a primary communication system. We formulate an optimization problem which minimizes the cognitive base station transmit power and the induced interference on the primary users and keeps them below predefined system thresholds. This is subject to providing a certain level of signal-to-interference-plus-noise ratio to the secondary users. We propose an iterative algorithm to solve the optimization problem. The convergence of the proposed iterative algorithm is analytically proved. Simulation results verify that the proposed algorithm quickly converges to the optimal solution. Results also indicate that the proposed algorithm guarantees the transmit power and interference constraints. We then compare the proposed scheme with a benchmark system based on the previous methods. Comparisons show significant reduction in the total interference at reasonable cost of the cognitive base station transmit power. |
Conference | 2014 IEEE Wireless Communications and Networking Conference (WCNC) |
Page range | 1188-1193 |
Proceedings Title | 2014 IEEE Wireless Communications and Networking Conference (WCNC) |
Series | IEEE Wireless Communications and Networking Conference |
ISSN | 1525-3511 |
Electronic | 1558-2612 |
ISBN | |
Electronic | 9781479930838 |
Publisher | IEEE |
Publication dates | |
09 Apr 2014 | |
Online | 20 Nov 2014 |
Publication process dates | |
Deposited | 05 Jun 2015 |
Accepted | 18 Dec 2013 |
Output status | Published |
Digital Object Identifier (DOI) | https://doi.org/10.1109/WCNC.2014.6952318 |
Web of Science identifier | WOS:000392912400207 |
Web address (URL) of conference proceedings | https://ieeexplore.ieee.org/xpl/conhome/6923023/proceeding |
Language | English |
https://repository.mdx.ac.uk/item/85949
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