Abstract
Recently, research on the Visual-MIMO by applying the concept of MIMO to communication between the LED array and camera is in progress. Although we already introduced the method for bit decision by using reference LED array pattern, it has the disadvantage of measuring the ISI each time when there is a change in the distance. To overcome this, in this paper, we propose a bit decision and error correction method used by using the luminance deviation without using the reference array pattern. First, we execute the bit decision using experimentally determined threshold. Next, we execute the error checking on the ON-LED and make a correction only if it is found to be error. Correction is determined by using the value of brightness deviation corresponding to the range of 68.2% (1) around the maximum frequency of the histogram for each ON-LED. We verify the performance of the proposed method according to the variation of ISI with distance by using both numerical and experimental analysis. 논문 15-40-10-02 The Journal of Korean Institute of Communications and Information Sciences '15-10 Vol.40 No.10 http://dx.doi.org/10.7840/kics.2015.40.10.1871 1871 ※ 본 연구는 미래창조과학부 및 정보통신기술연구진흥센터의 정보통신·방송 연구개발사업[2014-004-051-001]과 2015년도 미래창조 과학부의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업(과제번호: 2015R1A5A7037615)의 일환으로 수행하였음. First Author : Kookmin University School of Electronics Engineering, try456@kookmin.ac.kr, 학생회원 ° Corresponding Author : Kookmin University, School of Electronics Engineering, kdk@kookmin.ac.kr, 종신회원 * Kookmin University, School of Electronics Engineering, kmjkth@kookmin.ac.kr ** Kookmin University, School of Electronics Engineering, ypark@kookmin.ac.kr, 종신회원 논문번호:KICS2015-08-263, Received August 24, 2015; Revised October 20, 2015; Accepted October 20, 2015 The Journal of Korean Institute of Communications and Information Sciences '15-10 Vol.40 No.1
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