Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
권호 표지
DOI QR코드

DOI QR Code

Equalization On-Channel Repeater for Single Frequency Network of Terrestrial Digital Multimedia Broadcasting

T-DMB의 SFN을 위한 등화형 동일채널 중계기

  • 박성익 (한국전자통신연구원 방송시스템연구부) ;
  • 박소라 (한국전자통신연구원 방송시스템연구부) ;
  • 음호민 (한국전자통신연구원 방송시스템연구부) ;
  • 이용태 (한국전자통신연구원 방송시스템연구부) ;
  • 김흥묵 (한국전자통신연구원 방송시스템연구부)
  • Published : 2008.05.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper we consider technological requirements of the on-channel repeater to broadcast the terrestrial digital multimedia broadcasting (T-DMB) signals using single frequency networks (SFN) and propose the configuration and implementation method of the equalization on-channel repeater (OCR) that meet such requirements. The proposed equalization OCR not only has short time delay, but shows high output power and good quality of output signal by removing a feedback signal due to incomplete antenna isolation and multipath signal existing between the main transmitter and the OCR. In addition, computer simulations and laboratory tests results are provided to figure out performance of the proposed equalization OCR.

본 논문에서는 단일 주파수 망(Single Frequency Network: SFN)을 통해 지상파 DMB 신호를 서비스하기 위해 필요한 동일채널 중계기(On-Channel Repeater, OCR)의 요구사항에 대하여 고찰하고, 그러한 요구사항을 만족하기 위한 등화형 OCR의 구조 및 구현방법을 제안한다. 등화형 OCR은 짧은 시스템 지연을 가질 뿐만 아니라 송/수신 안테나의 낮은 분리도로 인한 궤환신호와 송신기와 중계기 사이의 다중경로 신호를 동시에 제거하여 높은 송신출력과 우수한 출력신호 품질을 보장한다. 또한, 본 논문에서는 전산실험을 통해 등화형 OCR의 성능을 살펴보고 실험실 테스트를 통해 실제 구현된 등화형 OCR의 성능을 검증한다.

Keywords

References

  1. ETSI, "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to Mobile, Portable and Fixed Receivers," ETSI EN 300 401 v1.3.3, Sept. 2001
  2. S. Cho, G. Lee, G. Bae, K. Yang, C.-H. Ahn, S. I. Lee, and C. Abn, "System and Services ofTerrestrial Digital Multimedia Broadcasting (T-DMB)," IEEE Trans. on Broadcasting, Vol. 53, No.1, March 2007
  3. G. Lee, S. Cho, K.-T. Yang, Y. K. Hahm, and S. I. Lee, "Development ofTerrestrial DMB Transmission System based on Eureka-147 DAB Systems," IEEE Trans. On Consumer Electronics, vol. 51, no. 1, pp. 63-68, Feb. 2005 https://doi.org/10.1109/TCE.2005.1405700
  4. Y. Lee, S. Lee, Y. H. Kim, S. I. Lee, Z.-K. Yim, B. Choi, S. Kim, and J.-S. Seo, "Field Trials for Terrestrial Digital Multimedia Broadcasting System," IEEE Trans. on Broadcasting, Vol. 53, No.1, March 2007
  5. Anders Mattsson, "Single Frequency Networks in DTV," IEEE Transactions on Broadcasting, vol. 51, no. 4, pp 413-422, Dec. 2005 https://doi.org/10.1109/TBC.2005.858419
  6. K. Salehian, M. Guillet, B. Carson, and A. Kennedy, "On-Channel Repeater for Digital Television Broadcasting Service," IEEE Transactions on Broadcasting, vol. 48, no. 2, pp. 97-102, June 2002 https://doi.org/10.1109/TBC.2002.1021274
  7. ATSC Recommended Practice: Design Of Synchronized Multiple Transmitter Networks, Doc. Allll, Sept. 2004
  8. ETSI, "Digital Video Broadcasting (DVB); DVB Mega-frame for Single Frequency Network (SFN) Synchronization," TS 101 191 v1.1.1, April 1997
  9. ETSI, "Digital Audio Broadcasting (DAB); Guidelines and Rules for Implementation and Operation; Part 2: System Features," ETSI TR 101 496-2 v1.1.2, May 2001
  10. A. Wiewiorka and P. N. Noss, "Digital On-Channel Repeater for DAB," BBC R&D White Paper WHP120, BBC, Sept. 2005
  11. K. M. Nasr, J. P. Cosmas, M. Bard, and J. Gledhill, "Performance of an Echo Canceller and Channel Estimator for On-Channel Repeaters in DVB-T/H Networks," IEEE Transactions on Broadcasting, vol. 53, no. 3, pp. 609-618, June 2002 https://doi.org/10.1109/TBC.2007.903612
  12. S. W. Kim, Y.-T. Lee, S. I. Park, H. M. Eum, J. H. Seo, and H. M. Kim, ""Equalization Digital On-Channel Repeater in Single Frequency Networks,"" IEEE Trans. on Broadcasting, vol. 52, no. 2, June 2006
  13. Y.- T. Lee, S. I. Park, H. MEum, J. H. Seo, H. M. Kim, S. W. Kim, and J. S. Seo, "A Design ofEqualization Digital On-Channel Repeater for Single Frequency Network ATSC System," IEEE Trans. on Broadcasting, vol. 53, no. 1, pp 23-37, Mar. 2007 https://doi.org/10.1109/TBC.2006.886453
  14. H. M. Kim, S. I. Park, J. H. Seo, H. Eum, Y.-T. Lee, S. I. Lee, andH. Lee, "Modulation and Pre-equalization Method to Minimize Time Delay in Equalization Digital On-Channel Repeater," accepted for publication in IEEE Trans. on Broadcasting
  15. Y. T. Lee, S. I. Park, S. W. Kim, C. T. Ahn and J. S. Seo, "ATSC Terrestrial Digital Television Broadcasting Using Single Frequency Networks," ETRI Journal, vol. 26, no. 2, pp. 92-100, April 2004 https://doi.org/10.4218/etrij.04.0603.0014
  16. Technical Document on "Transposer/Gap-Fillers R&S XLx8000", http://www.rohde-schwarz.com
  17. Technical Document on "TX-DAB100 OCR", http://www. txdigicast.com/prod2.htm
  18. G. A. Clark, S. K. Mitra, and S. R. Parker, "Block Implementation of Adaptive Digital Filters," IEEE Trans. On Circuits and Systems, Vol. 28, No.6, June 1981
  19. A. V. Oppenheim and R. W. Schafer, Discrete-Time Signal Processing, International Edition, Prentice-Hall, Englewood Cliffs, NJ,1989
  20. S. S. Kidambi, "Closed-form Approach to Design of All-pass Digital Filters using Cepstral Coefficients," Electronics Letter, vol. 40, no. 12, June 2004
  21. G. R. Reddy and M. N. S. Swamy, "Digital All-pass Filter Design through Discrete Hilbert Transform," Proc. ICASSP, Albuquerque, NM, USA, 1990