방송공학회논문지 (Journal of Broadcast Engineering)

  • 제26권6호
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  • Pages.766-777
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  • 2021
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  • 1226-7953(pISSN)
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  • 2287-9137(eISSN)
한국방송∙미디어공학회 (The Korean Institute of Broadcast and Media Engineers)
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셀룰러 방송을 위한 LTE 기반 5G MBMS와 5G NR의 PBCH 검출 성능 평가

Performance Evaluation of PBCH Detection of LTE-Based 5G MBMS and 5G NR for Cellular Broadcast

  • 안해성 (한국해양대학교 전자통신공학과 해양인공지능융합전공) ;
  • 김형석 (한국해양대학교 전자통신공학과 해양인공지능융합전공) ;
  • 차은영 (한국해양대학교 전자통신공학과 해양인공지능융합전공) ;
  • 김정창 (한국해양대학교 전자통신공학과 해양인공지능융합전공) ;
  • 안석기 (한국전자통신연구원) ;
  • 권선형 (한국전자통신연구원) ;
  • 박성익 (한국전자통신연구원) ;
  • 허남호 (한국전자통신연구원)
  • Ahn, Haesung (Interdisciplinary Major of Maritime AI Convergence, Department of Electronics and Communications Engineering, Korea Maritime and Ocean University) ;
  • Kim, Hyeongseok (Interdisciplinary Major of Maritime AI Convergence, Department of Electronics and Communications Engineering, Korea Maritime and Ocean University) ;
  • Cha, Eunyoung (Interdisciplinary Major of Maritime AI Convergence, Department of Electronics and Communications Engineering, Korea Maritime and Ocean University) ;
  • Kim, Jeongchang (Interdisciplinary Major of Maritime AI Convergence, Department of Electronics and Communications Engineering, Korea Maritime and Ocean University) ;
  • Ahn, Seok-Ki (Electronics and Telecommunications Research Institute) ;
  • Kwon, Sunhyoung (Electronics and Telecommunications Research Institute) ;
  • Park, Sung-Ik (Electronics and Telecommunications Research Institute) ;
  • Hur, Namho (Electronics and Telecommunications Research Institute)
  • 투고 : 2021.09.29
  • 심사 : 2021.10.29
  • 발행 : 2021.11.30
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초록

본 논문에서는 셀룰러 방송(cellular broadcast)을 위한 LTE (long term evolution) 기반 5G (fifth-generation) MBMS (multimedia broadcast and multicast services)와 5G NR (new radio)의 PBCH (physical broadcast channel) 검출 성능을 평가하고 5G NR의 PBCH 검출 성능을 향상시키는 방법을 제시한다. 시간 영역에서 수신 신호와 모든 가능한 PSS (primary synchronization signal)의 상관(correlation)을 계산하고, 상관 값을 결합(combining)하여 SS/PBCH 블록의 시작 위치와 프레임 동기를 획득한다. 또한, PBCH 검출 성능 향상을 위해 프레임 내에 존재하는 모든 SS/PBCH 블록에 포함된 PBCH 신호를 결합하는 방법을 제시한다. 본 논문에서 적용한 PBCH 결합 방법에 대한 성능을 평가하고 기존 LTE 기반 5G MBMS의 PBCH 검출 성능과 비교한다. 전산 실험 결과는 가산 백색 가우시안 잡음(additive white Gaussian noise: AWGN) 환경과 고정 및 이동 환경에서 5G NR의 PBCH를 결합함으로써 검출 성능이 향상되고 기존 LTE 기반 5G MBMS 보다 우수한 성능을 보여준다.

This paper presents an improved scheme for detection of the physical broadcast channel (PBCH) in long-term evolution (LTE)-based fifth-generation (5G) multimedia broadcast and multicast services (MBMS) and 5G new radio (NR) for cellular broadcast. In the time domain, by combining the correlations between the received signal and primary synchronization signal (PSS) within all SS/PBCH blocks, the frame synchronization and the start position of the SS/PBCH blocks can be obtained. In this paper, to improve the detection performance of PBCH for 5G NR, a combining scheme of PBCH signals within a frame is proposed. In addition, the performance of the proposed detection scheme is evaluated and the performance is compared with the conventional scheme for PBCH detection of LTE-based 5G MBMS. The simulation results show that the detection performance of PBCH for 5G NR is improved by combining the PBCH signals and outperforms LTE-based 5G MBMS under the additive white Gaussian noise (AWGN), fixed, and mobile environments.

키워드

과제정보

This work was supported by Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government(MSIT) (No.2017-0-00081, Development of Transmission Technology for Ultra High Quality UHD).

참고문헌

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