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Random Sign Reversal Technique in Space Frequency Block Code for Single Carrier Modulation

단일 반송파 변조를 위한 공간 주파수 블록 코드의 난수 부호 반전 기법

  • 정혁구 (한밭대학교 모바일융합공학과)
  • Received : 2022.08.19
  • Accepted : 2022.10.23
  • Published : 2022.10.30

Abstract

This paper proposes a random sign reversal technique in space frequency block code for single carrier modulation. The traditional space time and frequency block coding technique may be confronted with radio environments openly, severe radio hijacking problems are to be overcome. In order to avoid such an open radio issue, random coded data protection technique for space-time block code was proposed, but this algorithm can change channel combination per an Orthogonal Frequency Division Multiplexing block. This kind of slow switching increases the probability that nearby receivers will detect the transmitted data. This paper proposes a fast switching algorithm per data symbols' basis which is a random sign reversal technique in space frequency block code for Single Carrier Modulation. It is shown in simulation that the proposed one has a superior performance in comparison with the performance of the receiver which do not know the random timing sequence of sign reversal.

본 논문은 단일 반송파 변조를 위한 공간 주파수 블록 코드에서의 랜덤 부호 반전 기술을 제안한다. 종래의 시공간 그리고 공간 주파수 블록 코드는 전파 환경이 공개되어 있으므로 심각한 전파 탈취 문제를 극복해야 한다. 이러한 전파 공개 문제를 피하기 위해, 시공간 블록 코드를 위한 랜덤 코드 데이터 보호 방법이 제안되어 있지만, 이 알고리즘은 직교 주파수 분할 다중화 블록별로 채널 결합을 바꿀 수 있는데, 이와 같은 종류의 느린 스위칭은 근처의 수신기들이 전송된 데이터를 검출할 확률을 증가시킨다. 이 논문은 데이터 심볼 기반의 빠른 스위칭 알고리즘 즉, 단일 반송파 변조를 위한 공간 주파수 블록 코드에서의 랜덤 부호 반전 기술을 제안한다. 모의실험 결과는 제안하는 알고리즘이 랜덤 부호 반전 타이밍 시퀀스를 모르는 수신기의 성능과 비교하여 우수한 성능을 보유하고 있다는 것을 나타내었다.

Keywords

References

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