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Title: Inverse design of LED arrangement for visible light communication systems
Authors: Zheng, H
Chen, J
Yu, C 
Gurusamy, M
Keywords: Convex optimization
LED arrangement design
Signal to noise ratio
Visible light communication
Issue Date: 2017
Publisher: Elsevier
Source: Optics communications, 2017, v. 382, p. 615-623 How to cite?
Journal: Optics communications 
Abstract: In this paper, an optimal LED arrangement for indoor visible light communications (VLC) is proposed and numerically investigated. By using the concept of inverse design, the LED distribution can be formulated as a convex optimization problem and resolved accordingly. We show that sufficient brightness and uniform signal to noise ratio (SNR) can be achieved within the indoor coverage by using the proposed optimal LED arrangement, thus enabling the terminal mobility for indoor VLC. In addition, the analysis of delay spread distribution over the receiving plane shows that the design exhibits enhanced tolerance of inter-symbol interference (ISI). With the consideration of cabling cost for practical implementation, the suboptimal LED arrangement design is also investigated. Numerical results indicate that the suboptimal design can reduce the power consumption of the system with acceptable performance degradation.
ISSN: 0030-4018
EISSN: 1873-0310
DOI: 10.1016/j.optcom.2016.08.047
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