Light beam allocation algorithm for eliminating interference in visible light communications

In this paper, we present a model of visible light communication (VLC) systems which exploit light beams for downlink transmission. A calculation method is proposed for light beam configuration (LBC) which guarantees no blind areas in the whole VLC coverage while minimizing the number of light beams...

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Bibliographic Details
Published in:Proceedings (International Conference on Advanced Technologies for Communications) pp. 419 - 424
Main Authors: Duc-Quan Nguyen, Ngoc-Tan Nguyen, Nam-Hoang Nguyen, Spirinmanwat, Keattisak
Format: Conference Proceeding
Language:English
Published: IEEE 01.10.2016
Subjects:
Interference
Light Beam Configuration
Light emitting diodes
Optical receivers
Optical transmitters
Resource Allocation Algorithms
Resource management
Signal to noise ratio
Visible light communication
Visible Light Communications (VLC)
ISSN:2162-1039
Online Access:Get full text
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Summary:In this paper, we present a model of visible light communication (VLC) systems which exploit light beams for downlink transmission. A calculation method is proposed for light beam configuration (LBC) which guarantees no blind areas in the whole VLC coverage while minimizing the number of light beams. As a major contribution in this paper, a light beam allocation algorithm (LBAA) is proposed which aims to eliminate interferences between inter VLC Access Points (inter-APs) by using information of incoming data queue length and co-channel interference (CCI) conditions to decide which VLC beams are used for transmitting data to appropriate user equipment (UEs). By deploying the proposed algorithm, CCI can be eliminated because noise-effected regions and noise-free regions can be separated. Performance of the novel LBAA is analyzed, evaluated and then compared with that of another light beam allocation method using the Round-Robin algorithm. Performance results show that there are significantly improvements in term of SINR, user throughput and packet delay parameters when deploying the proposed LBAA.
ISSN:2162-1039
DOI:10.1109/ATC.2016.7764818