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Long Distance High Efficiency Transmission Techniques for Digital Signage  

Lee, Sun Yui (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실)
Cha, Jae Sang (서울과학기술대학교 전자IT미디어공학과)
Jang, Yeong Min (국민대학교 전자공학부)
Kim, Jin Young (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실)
Publication Information
Journal of Satellite, Information and Communications / v.10, no.1, 2015 , pp. 62-66 More about this Journal
Abstract
This paper introduces various applications and contents of digital signage, and analyzes conventional communication techniques to increase communication range. To realize digital signage in long distance, this paper proposes a hybrid modulation scheme and analyzes its performance. To verify its performance in real channel environment, we mapped symbols and experimented data transmission and reception with a visible light communication module with USRP. As a result, we confirmed a data receiving range and power of transmission and reception of the hybrid modulation mode. Also, we showed that the proposed modulation scheme has better performance of communication range and power efficiency than that of the conventional QAM technique.
Keywords
QAM(Quadrauture Amplitude Modulation); PPM(Pulse Position Modulation); CSK(Color Shift Key); OCC(Optical Camera Communication); F-IoT(Flexible Internet of Things);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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