Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Planning of Gap Filler Networks in Satellite DMB Systems for Wireless Multimedia Services

  • Noh, Sun-Kuk (Department of Mobile Communications Engineering at Honam University) ;
  • Yun, Tae-Soon (Department of Mobile Communications Engineering at Honam University) ;
  • Choi, Dong-You (Department of Information and Communications Engineering, Chosun University)
  • Received : 2010.04.15
  • Accepted : 2011.01.03
  • Published : 2011.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Satellite digital multimedia broadcasting (S-DMB) systems use gap fillers (GFs) to provide wireless multimedia services to non-line-of-sight locations. GFs act as repeaters, and S-DMB systems require GF networks in order to guarantee mobile reception. Each GF covers a cell or sector. In order to provide contiguous coverage of an area comprising two or more cells or sectors, multiple GFs are needed. However, when multiple GFs are situated close to each other, interference is likely to occur. As a result, in this study, we have investigated system-level environments for planning the design of interference-free GF networks in S-DMB systems. Our investigations revealed that S-DMB services are unavailable because of quality deterioration caused by interference when the delay attributable to a GF and the satellite signals exceeds ${\pm}$256 chips and the distance between the GF and its reception terminal is greater than 4.6 km. On the basis of this analysis, we conducted a field test that confirmed that the above-mentioned time delay can be controlled in such a way as to ensure high quality S-DMB services.

Keywords

References

  1. Rec. ITU-R BO. 1130-4, "Systems for digital satellite broadcasting to vehicular, portable and fixed receivers in the bands allocated to BBS (sound) in the frequency range 1400 - 2700 MHz."
  2. ETSI ETS 300 401, "Radio broadcasting systems; digital audio broadcasting (DAB) to mobile, portable and fixed receivers," ETSI, May 1997, Second Edition.
  3. V. Erkkila and M. Jokisalo, "DAB field trials in Finland," EBU Technical Review, pp. 28-35, Aug. 1994.
  4. A. Sieber and C. Weck, "What's the difference between DVB-H and DAB-in the mobile environment?" EBU Technical Review, July 2004.
  5. S. Hirakawa, N. Sato, and H. Kikuchi, "Broadcasting satellite services for mobile reception," Proc. IEEE, vol. 94, no. 1, pp. 327-332, Jan. 2006. https://doi.org/10.1109/JPROC.2005.859711
  6. S.-J. Lee, S.- W, Lee, K.-W, Kim, and J.-S. Seo, "Personal and mobile satellite DMB services in Korea," IEEE Trans. Broadcast., vol. 53, no. 1, pp. 179-187, Mar. 2007. https://doi.org/10.1109/TBC.2006.889691
  7. S.-K. Noh, "A study on the base of design of GF network for satellite DMB," J. the Korean Institute of Maritime Inf. & Commun. Sci., vol. 12, no. 1, pp. 183-188, Jan. 2008.
  8. "Guidelines for evaluation of radio transmission technologies for IMT-2000," ITU-R M .1225, 1997.
  9. 3GPP, 3G Technical Specification 25.942-Release 6, 3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Radio Frequency (RF) System scenarios. 2002.