Performance of indoor optical femtocell by visible light communication

Femotocell has been proposed and deployed to improve the indoor coverage and capacity of a cellular network. One big challenge in its deployment is the interference between the macrocell and femtocell cellular networks. In this paper we propose a new physical layer for the implementation of indoor f...

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Bibliographic Details
Published in:Optics communications 2013-07, Vol.298-299, p.59-66
Main Authors: Cui, Kaiyun, Quan, Jinguo, Xu, Zhengyuan
Format: Article
Language:English
Subjects:
Cellular
Cellular communication
Computer simulation
Dimming
Indoor
Interference
Modulation
Optical femtocell
Variable-PPM
Visible light communication
Wavelength division
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Summary:Femotocell has been proposed and deployed to improve the indoor coverage and capacity of a cellular network. One big challenge in its deployment is the interference between the macrocell and femtocell cellular networks. In this paper we propose a new physical layer for the implementation of indoor femtocells – optical femtocells by LED-based visible light communication. A general system structure of the indoor optical femtocell network is first introduced. A combined wavelength division and code division multiple access scheme is proposed to differentiate cells and multiple users within a cell. This scheme coupled with directional beaming characteristics of the LEDs helps to mitigate intercell interference and intracell inference. The communication performance adopting the dimming compatible variable-PPM modulation suggested by the IEEE standard is analyzed. Monte-Carlo simulation is then carried out to reveal the system performance numerically under typical system settings and effects of various parameters.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2013.02.018