Journal of Broadcast Engineering (방송공학회논문지)

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

DOI QR Code

Inter-carrier Interference Reduction Method Using Mask in a Fast Moving OFDM Receiver

고속 이동 OFDM 수신기에서 마스크를 이용한 반송파간 간섭 감소 방법

  • 구영모 (인하공업전문대학 정보통신과)
  • Received : 2013.01.23
  • Accepted : 2013.04.11
  • Published : 2013.05.30
Download PDF
⟨ Previous Next ⟩

Abstract

In orthogonal frequency division multiplexing system (OFDM), rapid channel variation caused by fast moving receiver leads to a loss of subcarrier orthogonality which results in inter-carrier interference (ICI) and receiver performance degradation. In conventional receivers, performance is enhanced by estimating ICI and removing it from received signals. In this paper, an ICI reduction scheme using a time-domain mask and adding is proposed. The proposed scheme is applied to DVB-T receiver to prove the Doppler mobile performance enhancement.

OFDM 시스템에서 수신기가 고속으로 이동하는 경우에는 채널의 급속한 변화로 인해 반송파 간 직교성이 파괴되고 반송파 간 간섭(ICI)이 발생하여 수신기의 성능을 떨어뜨린다. 기존의 수신기에서는 ICI 를 추정한 후 이를 수신 신호로부터 상쇄시켜 성능을 개선한다. 본 논문에서는 수신 신호를 시간 영역에서 마스킹하고 더하여 발생하는 ICI의 크기를 줄여 수신기의 성능을 개선하는 방법을 제안하고 이를 DVB-T 수신기에 적용하여 도플러 이동 수신 성능을 검증한다.

Keywords

References

  1. ETSI Standard: EN 300 744 V1.5.1, Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television.
  2. ARIB Standard: STD-B31, Transmission System for Digital Terrestrial Television Broadcast.
  3. A.A. Hutter, R. Hasholzner, and J.S. Hammerschmidt, "Channel estimation for mobile OFDM systems," Proc. IEEE VTC''99-Fall, Sept. 1999.
  4. P. Robertson and S.Kaiser, "The effects of Doppler spreads in OFDM(A) mobile radio systems," Proc. IEEE VTC''99-Fall, pp. 329-333, Sept. 1999.
  5. W. G. Jeon and K. H. Chang, "An equalization technique for orthogonalfrequency- division multiplexing systems in time-variant multipath channels," IEEE Trans. Commun., vol. 47, pp. 27-32, Jan. 1999. https://doi.org/10.1109/26.747810
  6. W.-S. Hou and B.-S. Chen, "ICI cancellation for OFDM communication systems in time-varying multipath fading channels," IEEE Trans. Wireless Commun., vol. 4, no. 5, pp. 2100-2100, Sept. 2005. https://doi.org/10.1109/TWC.2005.853837
  7. Y. Mostofi and D. Cox, "ICI mitigation for mobile OFDM receivers," Proc. IEEE 38th ICC, Anchorage, Alaska, May 2003.
  8. V. Fischer, A. Kurpiers, and D. Karsunke, "ICI reduction method for OFDM systems," 8th International OFDM-Workshop 2003 (InOWo'03), Hamburg, Conference Proceedings.
  9. C. Muschallik, "Improving an OFDM reception using an adaptive Nyquist windowing," IEEE Trans. Consumer Electronics, vol. 42, pp. 259-269, Aug. 1996. https://doi.org/10.1109/30.536046
  10. COST207 (under the direction of M. Failly), ""Digital land mobile radio communications (final report),"" Commission of the European Communities, Directorate General Telecommunications, Information Industries and Innovation, 1989, pp. 135-147.
  11. 3GPP2: C.R1002-0 v1.0, CDMA2000 evaluation methodology