Journal of Digital Convergence (디지털융복합연구)

The Society of Digital Policy and Management (한국디지털정책학회)
권호 표지
DOI QR코드

DOI QR Code

A Multi-Antenna Mobile Measurement System for DTV Coverage Measurement

DTV 커버리지 측정을 위한 다중 안테나 이동측정시스템

  • Jeong, Young-Seok (Dept. of IT Environment, Graduate School of Venture, Hoseo University) ;
  • Yang, Hae-Sool (Dept. of Information Management, Graduate School of Venture, Hoseo University)
  • 정영석 (호서대학교 벤처전문대학원 IT환경학과) ;
  • 양해술 (호서대학교 벤처전문대학원 정보경영학과)
  • Received : 2013.09.25
  • Accepted : 2013.11.20
  • Published : 2013.11.28
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a novel mobile measurement system with multi antennas which enable mobile measurement as well as fixed measurement with telescope mast. Proposed system installed 4 omni directional antennas for the space diversity process and one directional log periodic antenna for the simultaneous conventional fixed measurement. Whole antenna systems are connected to the custom DTV channel analyzers with Ethernet networks respectively and processed by the main controller to calculate real time average receive levels. To prove the performance of proposed system, the typical receive models are categorized as 3 area types - open area, building area and house area, and then intensive field tests were performed through mobile and fixed measurement phases. With these measurement data, the relationships between mobile and fixed measurement are analyzed, and the concept of compensation factor is proposed to assume the average receive level of signal. The field test is fulfilled as a co-work with public broadcasters and the proposed system is applied to the intensive coverage measurement projects for metropolitan areas by the korean government agencies.

본 논문에서는 기존 DTV 커버리지 측정차량의 문제점을 해결하고 효율적으로 전파 음영지역을 찾아내기 위해 고정식 DTV전파측정차량의 기능을 포함하면서도 이동하며 전파수신현황 및 수신상태를 측정할 수 있는 다중 안테나 이동측정시스템을 제안한다. 제안된 시스템은 모두 4개의 무지향성(omni-directional)안테나와 고정측정을 위한 1개의 지향성(directional)안테나를 포함하며, 공간 다이버시티(space diversity)를 활용하여 운용할 수 있도록 각각의 안테나마다 측정장비를 배치하고 각각의 측정값을 실시간으로 수집하고 처리한다. 제안된 시스템의 효용성을 보이기 위해 국내 수신 전파 환경을 3가지 유형으로 모델링하고 이들 지역에서 집중적인 측정을 실시하였다. 또한 측정 결과의 상세한 분석을 토대로 이동측정 및 고정측정간의 상관관계를 밝히고자 하였다. 특히 제안된 시스템의 적용을 위한 실험에는 방송사 현업 실무자들이 측정 및 결과 정리에 공동으로 참여하는 등 객관성을 확보하고자 하였으며 개발 장비를 국책 연구기관의 인위적 난시청 조사사업에 일부 적용하는 등 실제 방송 커버리지 관리 업무에 적극적으로 활용하고 있다.

Keywords

References

  1. ATSC, "Receiver Performance Guidelines," ATSC Recommended Practice A/74, June 2004.
  2. ATSC, "Developing DTV Field Test Plan", ATSC Recommended Practice A/75, July 2001.
  3. Y.W. Suh, et al, "A Novel Integrated Measurement and Analysis System for Digital Broadcasting", IEEE Trans. on Consumer Electronics, Vol.55, No. 1, pp.56-62, Feb. 2009. https://doi.org/10.1109/TCE.2009.4814414
  4. Y. W. Suh, S. I. Park, J. Lee, J. Y. Choi, and J. S. Seo, "A Novel Receive Power Analysis System for DTV Broadcasting Network", IEEE Trans. Consumer Electronics, Vol. 56, Issue 1, pp. 236-230, Feb. 2010. https://doi.org/10.1109/TCE.2010.5439149
  5. Arnaud Guena, Didier Zapparata, and Alain Sibille, "Mobile Diversity Reception of DVB-T Signals using Roof or Window Antenna", UEI, Jan. 2004.
  6. S. Kaul, K. Ramachandran, P. Shankar, S. Oh, M. Gruteser, I. Seskar and T. Nadeem, "Effect of Antenna Placement and Diversity on Vehicular Network Communications", IEEE SECON07, June 2007.
  7. Commercial Radio Australia, "Car antenna placement", June 2011
  8. R.Ehmann, B. Wagner, T. Weiland, "Farfield Calculations for Car Antennas at Different Locations", IEEE Trans. on Magnetics, Vol. 33, No. 2, March 1997.
  9. Lester Low, Richard Langley, Richard Breden, and Peter Callaghan, "Hidden Automotive Antenna Performance and Simulation", IEEE Trans. on Antennas and Propagation, Vol. 54, No. 12, Dec. 2006.
  10. H. Hashemi, "The Indoor Propagation Channel", Proceedings of the IEEE, pp.943-968, Vol. 81, No. 7, July 1993. https://doi.org/10.1109/5.231342
  11. Young-Woo Suh, Young-Seok Jeong, Sungho Jeon, Il-Soo Kyung, Hae-Sul Yang, "An Efficient Mobile Coverage Measurement System for ATSC DTV Network", IEEE BMSB 2013, June 2013.

Cited by

  1. The Study on the implementation of Portable Http Live Streaming Transmitter based the Embedded Linux vol.13, pp.11, 2015, https://doi.org/10.14400/JDC.2015.13.11.141