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A UE Position Tracking Method for Optical Beamforming Transmission in Visible Light Communications  

Hwang, Yu Min (광운대학교 전자융합공학과 유비쿼터스 통신 연구실)
Kim, Kyung Ho (광운대학교 전자융합공학과 유비쿼터스 통신 연구실)
Song, Yu Chan (광운대학교 전자융합공학과 유비쿼터스 통신 연구실)
Lee, Sang Woon (남서울대학교 멀티미디어학과)
Kim, Jin Young (광운대학교 전자융합공학과 유비쿼터스 통신 연구실)
Publication Information
Journal of Satellite, Information and Communications / v.9, no.2, 2014 , pp. 85-90 More about this Journal
Abstract
In this paper, we propose a novel UE(User Equipment) position tracking algorithm of visible light signals, and analyze BER performance when optical beamforming scheme is applied in VLC(Visible Light Communications) system. The optical beamforming scheme as an interference mitigation method provides good optical channel conditions between UE(Rx) and LED light(Tx), and lead to better BER performance because UE is able to get a better RSSI(Received Signal strength indication) value. For the system BER, the proposed UE position tracking method for optical beamforming transmission demonstrates the performance enhancement compared to a system not applied the optical beamforming transmission scheme, and up to about 5~6dB SNR performance gain is achieved. The results of the paper can be applied to design of various VLC and LBS applications for ubiquitous home network systems.
Keywords
VLC; UE tracking; positioning; optical beamforming; RSSI;
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