A Research On the T-DMB Received Environment For the Efficient Reuse of the Band of VHF Frequency

This study analyzed the properties of VHF band and suggested an efficient VHF band application plan for digital radio and UHDTV broadcasting through the experiment by the house T-DMB device in practical user environment. In order to find an efficient frequency band for digital radio broadcasting, this study examined first, to check the times of drop-out receive occurring in the audible area using a DMB/FM CAR Radio for T-DMB that has the characteristics of DAB. Second, this article explored the phenomenon of feedback loops in the same channel using a T-DMB house gap filler transmitting the signal by the same OFDM modulation scheme with UHDTV for configuring suitable SFN transmission network of the UHDTV broadcasting. Based on these experiments, this study suggested a suitable VHF band for digital radio and an efficient utilization of the VHF frequency band for the SFN network configuration of UHDTV. Keyword : Digital Radio, UHDTV, VHF, Feed Back, T-DMB a) 동아방송예술대학교 방송기술계열(Dong-Ah Institute of Media and Arts, Division of Broadcasting Engineering) b) SBS 라디오기술팀(SBS, Radio Engineering Team c) 서울과학기술대학교 전자IT미디어공학과(Seoul National University of Science and Technology, Dept Electronics and IT Media Engineering) ‡Corresponding Author : 박구만(Gooman Park) E-mail: gmpark@seoultech.ac.kr Tel: +82-2-970-6430 ORCID: http://orcid.org/0000-0002-7055-5568 ・Manuscript received July 27, 2016; Revised September 2, 2016; Accepted September 2, 2016. 특집논문 (Special Paper) 방송공학회논문지 제21권 제5호, 2016년 9월 (JBE Vol. 21, No. 5, September 2016) http://dx.doi.org/10.5909/JBE.2016.21.5.726 ISSN 2287-9137 (Online) ISSN 1226-7953 (Print) 박성규 외 3인: VHF대역의 효율적 재활용을 위한 T-DMB 수신환경 조사 727 (Sung-Kyu Park et al.: A Research On the T-DMB Received Environment For the Efficient Reuse of the Band of VHF Frequency)