The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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An Efficient Candidate Activation Pattern Set Generation Scheme for GSM in Optical Wireless Communication with High Interference Environment

높은 상호간섭 환경의 광무선통신에서 일반화된 공간변조 방식의 효율적인 후보 활성화 패턴집합 생성방법

  • 김정현 (한국광기술원 mLED연구센터) ;
  • 홍성훈 (전남대학교 전자컴퓨터공학부)
  • Received : 2019.09.02
  • Accepted : 2019.10.15
  • Published : 2019.10.31
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Abstract

In the GSM method for OWC-MIMO System, it is important to select an activation pattern set(: APS) for the performance optimization in the environment where mutual interference is high depending on the location of the transmitter and receiver. However, due to the high computational complexity, a high cost is paid in selecting the transmission APS. In this paper, we propose a method to reduce the candidate APS by pre-determining basic APS when generating candidate APS. The simulation results show that the proposed method has the same BER performance and reduce the computational complexity by 90% compared to the general GSM method in the high interfering environment.

OWC-MIMO시스템에서 GSM변조기법은 송 수신기의 위치에 따라 상호 간섭이 큰 환경에서 성능 최적화를 위한 활성화 패턴집합을 선택하는 과정이 중요하다. 하지만, 높은 연산 복잡도로 인해 최적의 활성화 패턴집합을 선택하는 과정에서 높은 비용을 지불한다. 본 논문에서는 전송 활성화 패턴집합 선택을 위한 후보 활성화 패턴집합 생성 시 기본 활성화 패턴 집합을 미리 결정하는 방식을 통해 후보 활성화 패턴 집합의 수를 감소시키는 방법을 제안한다. 모의실험 결과, 제안된 방법은 높은 간섭 환경에서 일반적인 GSM변조기법과 비교할 때 동일한 BER성능과 약 90%정도 감소된 후보 활성화 패턴집합의 수를 가져 복잡도가 크게 감소함을 확인하였다.

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References

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