The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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Proposal Ultra-fast Multimedia Optical Subscriber Access Network to Guarantee the same Performance Regardless of Data Rates using Optical Frequency Domain CDMA Method

데이터속도에 무관하게 동일 성능을 보장하는 광주파수영역 CDMA를 이용한 초고속 멀티미디어 광 가입자망의 제안

  • 박상조 (서원대학교 컴퓨터정보통신공학부) ;
  • 김봉규 (한국전자통신연구원)
  • Published : 2004.10.01
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Abstract

In this paper, we propose ultra-fast multimedia optical subscriber access network using optical frequency domain CDMA method in order to access the multimedia with multiple data rates. We numerically analyze the effects of spectral power distortion in the light source for the optical CDMA system modified PN codes and FBG(Fiber Bragg Grating)s. In the proposed multiple-rate multimedia access optical networks, the performances such as BER(Bit Error Rate) are the same for all data regardless of data rates in the case of the same number of simultaneous ONU. In the proposed ultra-fast multimedia optical subscriber access network, the performances for all data are much more improved than those in the conventional system.

다양한 데이터 속도와 버스트 타입과 같은 다양한 형태의 신호가 혼재하는 멀티미디어 서비스를 전송하기 위한 초고속 광 가입자망을 구축하기 위하여 수정한 PN 코드를 사용한 주파수영역에서 확산하는 광 CDMA 시스템을 제안한다. 광 멀티미디어 가입자망에서 동시 가입자의 수를 늘리고, 간섭잡음을 경감시키기 위하여 수정한 PN 코드를 사용한 FBG형 광 CDMA에 대하여 광원의 SPD(spectral power distortion)에 의한 특성변화를 수치적으로 분석한다. 다양한 데이터의 속도의 신호가 혼재한 멀티미디어 시스템에서 데이터의 속도에 관계없이 동시 가입자의 수가 같을 경우 BER 특성이 동일하다는 것을 알 수 있다. 그리고 제안한 광주파수영역 CDMA를 이용한 초고속 멀티미디어 네트워크에서의 BER 특성이 종래방식보다 훨씬 향상되는 것을 알 수 있다.

Keywords

References

  1. ITU-T Recommendation G.983.1, Broadband optical access systems based on PON, Oct., 1998
  2. K. Kitayama, H. Sotobayashi and N. Wada, 'Optical code division multiplexing (ODCM) and its applications to photonic networks,' IEICE Trans. Fundamentals, Vol.E82-A, No.12, pp.2616-2626, 1999
  3. S. Park, K. Tsukamoto and S. Komaki, 'Polarity-reversing type photonic receiving scheme for optical CDMA signal in radio highway,' IEICE Trans. Electron, Vol.81-C, pp.462-467, 1998
  4. T. Dennis and J. F. Young, 'Optical implementation of bipolar codes,' IEEE J. of Quantum Electronics, Vol.35, No.3, pp.287-291, 1999 https://doi.org/10.1109/3.748832
  5. H. Fathallah, L. A. Rusch and S. LaRochelle, 'Passive optical fast frequency-hop CDMA communications system,' IEEE J. of Lightwave Tech., Vol.17, No.3, pp.397-405, 1999 https://doi.org/10.1109/50.749379
  6. K. Yu, J. Shin and N. Park, 'Wavelength-time spreading optical CDMA system using wavelength multiplexers and mirrored fiber delay lines,' IEEE Photonics Tech. Lett., Vol.12, No.9, pp.1278-1280, 2000 https://doi.org/10.1109/68.874261
  7. S. Kim, 'Cyclic optical encoders/decoders for compact optical CDMA networks,' IEEE Photonics Tech. Lett., Vol.12, No.4 pp.428-430, 2000 https://doi.org/10.1109/68.839041
  8. L. R. Chen, 'Fiexible fiber Bragg grating encoder/decoder for hybrid wavelength-time optical CDMA,' IEEE Photonics Tech. Lett., Vol.13, No.11 pp.1233-1235, 2001 https://doi.org/10.1109/68.959374
  9. M. J. L, Cahill, G. J. Pendock and D. D. Sampson, 'Hybrid coherence multiplexing/coarse wavelength-division multiplexing passive optical network for customer access,' IEEE Photonics Lett., Vol.9, No.7, pp.1032-1034, 1997 https://doi.org/10.1109/68.593390
  10. S. Maric, O. Moreno and C. Corrada, 'Multimedia transmission in fiber optical LAN's using optical CDMA,' IEEE J. of Lightwave Tech., Vol.14, pp.2149-2153, 1996 https://doi.org/10.1109/50.541202
  11. J. G. Zhang, 'Flexible optical CDMA networks using strict optical orthogonal codes for multimedia broadcasting and distribution applications,' IEEE Trans. Broadcast, Vol.45, pp.106-115, 1999 https://doi.org/10.1109/11.754989
  12. E. Inate, H. Shalaby, P. Fortier and L. Rusch, 'Multirate optical fast frequency hopping CDMA system using power control,' IEEE of Lightwave Tech., Vol.20, No.2, pp.166-177, 2002 https://doi.org/10.1109/50.983229
  13. J. Huang and D. Hsu, 'Fiber-grating-based optical CDMA spectral coding with nearly orthogonal M-sequence codes,' IEEE Photonics Tech. Lett., Vol.12, No.9, pp.1252-1254, 2000 https://doi.org/10.1109/68.874252
  14. B. K. Kim, S. Park, Y. Yeon and B. W. Kim, 'Radio-over-fiber system using fiber-grating-based optical CDMA with modified PN codes,' IEEE Photonics Tech. Lett, Vol.15, No.10, pp.1485-1487, 2003 https://doi.org/10.1109/LPT.2003.818043
  15. G. P. Agrawal, Fiber-optic Communication Systems, 2nd edition, John willey & Sons Inc., pp.170-172, 1997