The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
권호 표지

A Study on the Interference Effects between UWB and T-DMB Systems

UWB 시스템과 T-DMB 시스템간의 간섭 영향에 관한 연구

  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, a great variety of radio services are provided and interference problem between radio systems is being watched remarkably. Therefore, a study of interference between radio systems is needed. In this paper, compatibility between Ultra Wideband (UWB) and Terestrial Digital Multi-media Broadcasting (T-DMB) is analyzed and then distance between them is computed. UWB systems have a very broad frequency characteristic. A big advantage is to share frequency that is already allocated to other systems. T-DMB is a good point that while L-Band is already used for DAB, T_DMB is free of charge. AT-DMB (Advanced T-DMB) is being standardized recently. The result which is analyzed for the interference effects between UWB and T-DMB Systems is 10 [dB], which is value calculated by C/(N0+I), at 80 [m] and then the value is saturated at 150 [m].

최근 무선통신 서비스의 급속한 증가로 인해 각 무선통신 시스템 사이의 간섭 문제가 대두되고 있다. 따라서, 본 논문에서는 UWB 시스템과 지상파 방송 시스템 사이의 간섭 즉, 양립성을 분석하였고, 두 시스템 사이의 거리를 계산하여 분석하였다. UWB 시스템은 매우 넓은 주파수 특성 때문에 임펄스 전파라고도 불리고, 가장 큰 장점은 다른 시스템에 할당된 주파수를 공유 할 수 있다는 것이다. 지상파 방송의 가장 큰 장점은 L-Band에서는 DAB를 위해 이미 주파수가 할당된 반면에, 지상파 방송 서비스는 제한 없이 이용할 수 있다는 것이다. 최근에 Advanced T-DMB의 표준화 작업이 진행되고 있다. 이러한 두 시스템의 양립성을 분석한 결과 80 [m] 이상의 이격 거리에서 C/(N0+I)가 10 [dB]이상을 보였고 약 150 [m]이상에서 값이 포화됨을 보여주고 있다.

Keywords

References

  1. J. Y. Kim, Interference Analysis of Wireless Communication Systems, Hongreung Science Publishers, Seoul, Korea, 2010.
  2. G. R. Aiello and G. D. Rogerson, "Ultra-wideband wireless systems," IEEE Microwave Mag., pp. 36-47, June. 2003.
  3. J. Y. Kim, Ultra WideBand Wireless Communication Systems, GS Intervision Publishers, Seoul, Korea, 2009.
  4. S. Plimmer and D. Barker, "Impact of UWB on third-generation telecommunications (3G)," M19_50R0_SE24_UWB_UK-report-UWB, CEPT SE24 M19, Copenhagen, Mar. 2003.
  5. R. K. C. Tan, "Eureka-147 digital audio broadcasting," Sound Works Magazine, pp. 22-26, Jan/Feb. 1998.
  6. G. Lee, S. Cho, K. T. Yang, Y. K. Hahm, and S. I. Lee, "Development of terrestrial DMB transmission system based on Eureka-147 DAB system," IEEE Trans. Consumer Electronics, vol. 51, no. 1, pp. 63-68, Feb. 2005. https://doi.org/10.1109/TCE.2005.1405700
  7. ETSI, Digital Audio Broadcasting (DMB); Targets for typical operation, ETSI TS 101 758, July 2000.
  8. Federal Communication Commission (FCC), Revision of Part 15 of the Commission’s Rules Regarding Ultra-Wideband Transmission Systems, First report and Order, ET Docket 98-153,FCC 02-8, adopted/released February 14/April 22, 2002.
  9. D. Landi and C. Fischer, "The effects of UWB interference on GSM systems," Proc. Int. Zurich Seminar , pp. 86-89, Feb. 2004.