한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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Visual-MIMO 시스템에서 영상의 휘도 신호를 이용한 수신 성능 향상

Performance Improvement of Visual-MIMO System Using Image Brightness Information

  • Baek, Jeong-Hoon (Kookmin University, Department of Electronics Engineering) ;
  • Yun, Kee-Bang (Incheon National University, Department of Electronics Engineering) ;
  • Park, Youngil (Kookmin University, School of Electronics Engineering) ;
  • Kim, Ki-Doo (Kookmin University, School of Electronics Engineering)
  • 투고 : 2014.11.10
  • 심사 : 2014.12.18
  • 발행 : 2014.12.31
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초록

최근 LED 어레이와 카메라간의 통신 (일명, 'Visual-MIMO') 연구가 활발히 진행되고 있으며, 차량 및 스마트폰 등으로의 응용이 극대화될 것으로 기대된다. 본 논문에서는 수신 영상의 휘도 정보를 이용하여 Visual-MIMO 시스템의 BER(Bit Error Rate) 성능을 개선하고자 한다. 특히 심벌간간섭 (ISI: Inter-Symbol-Interference)에 의한 오류를 최소화하고자 오류정정 방법을 제안한다. 잡음과 거리의 변화에 따른 성능 분석은 시뮬레이션과 하드웨어 실험을 통해 타당성을 검증한다.

Recently, the communication between LED array and camera, called Visual-MIMO, is under active research and we expect the maximization of application to the vehicle as well as smart-phone. In this paper, we improve the BER performance of Visual-MIMO system by using the brightness information of a received image. We also suggest the error correction method to minimize the error due to Inter-Symbol-Interference. The performance analysis according to the noise and distance variation will verify the validity of our proposed method including results through simulation and hardware experiment.

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참고문헌

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