Journal of Communications and Networks

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

Mitigation Techniques of Channel Collisions in the TTFR-Based Asynchronous Spectral Phase-Encoded Optical CDMA System

  • Miyazawa, Takaya (National Institute of Information and Communications Technology (NICT)) ;
  • Sasase, Iwao (Department of Information and Computer Science, Keio University)
  • Received : 2007.08.20
  • Accepted : 2007.12.10
  • Published : 2009.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose a chip-level detection and a spectral-slice scheme for the tunable-transmitter/fixed-receiver (TTFR)-based asynchronous spectral phase-encoded optical codedivision multiple-access (CDMA) system combined with timeencoding. The chip-level detection can enhance the tolerance of multiple access interference (MAI) because the channel collision does not occur as long as there is at least one weighted position without MAI. Moreover, the spectral-slice scheme can reduce the interference probability because the MAI with the different frequency has no adverse effects on the channel collision rate. As a result, these techniques mitigate channel collisions. We analyze the channel collision rate theoretically, and show that the proposed system can achieve a lower channel collision rate in comparison to both conventional systems with and without the time-encoding method.

Keywords

References

  1. J. A. Salehi, A. M. Weiner, and J. P. Heritage, 'Coherent ultrashort light pulse code-division multiple access communication systems, 'J. Lightwave Technol., vol. 8, issue. 3, pp. 478–491, Mar. 1990
  2. F. Xue, Z. Ding and S. J. B Yoo, 'Performance analysis for optical CDMA networks with random access schemes, 'in Proc. IEEE GLOBECOM 2004, vol.3, pp. 1883–1887, Nov./Dec. 2004
  3. F. Xue, Z. Ding and S. J. B Yoo, 'Performance evaluation of optical CDMA networks with random media access schemes, 'in Proc. IEEE Optical Fiber Communication Conference, paper OThG5, Mar. 2005
  4. V. J. Hernandez, Y. Du,W. Cong, R. P. Scott, K. Li, J. P. Heritage, Z. Ding, B. H. Kolner and S. J. B. Yoo, 'Spectral phase-encoded time-spreading (SPECTS) optical code-division multiple access for terabit optical access networks,' J. Lightwave Technol., vol. 22, no. 11, pp. 2671–2680, Nov. 2004
  5. T. Sonoda, K. Kamakura, T. Ohtsuki and I. Sasase, 'Optical spread time CDMA systems combined with time domain OOC encoding, 'in Proc. 1999 IEEE Pacific Rim Conference on Communiocations, Computers and Signal Processing (PACRIM'99), Aug. 1999, pp. 34–37
  6. K. Kamakura, T. Ohtsuki and I. Sasase, 'Optical spread time CDMA communication systems with PPM signaling, 'IEICE Trans. Commun., vol. E.82-B, no. 7, pp. 1038–1047, July 1999
  7. P. R. Prucnal, M. A. Santoro and T. R. Fan, 'Spread spectrum fiber-optic local area network using optical processing,' J. Lightwave Technol., vol. LT-4, pp. 547–554, May 1986
  8. J. A. Salehi and C. A. Brackett, 'Code division multiple-access techniques in optical fiber network -part I: Fundamental principles,' IEEE Trans. Commun., vol. 37, no. 8, pp. 824–833, Aug. 1989
  9. J. A. Salehi, 'Code division multiple-access techniques in optical fiber network-part II: Systems performance analysis, 'IEEE Trans. Commun., vol. 37, no. 8, pp. 834–842, Aug. 1989
  10. F. R. K. Chung, J. A. Salehi, and V. K. Wei, 'Optical orthogonal codes: Design, analysis and applications,' IEEE Trans. Inf. Theory., vol. 35, pp. 595–604, May 1989
  11. H. M. Kwon, 'Optical orthogonal code-division multiple access system-PartI: APD noise and thermal noise,' IEEE Trans. Commun., vol. 42, pp. 2470–2479, July 1994
  12. H. M. H. Shalaby, 'Chip-level detection in optical code division multiple access,' J. Lightwave Technol., vol. 16, issue. 6, pp. 1077–1087, June 1998
  13. H. Ito, Y. Muramoto, T. Furuta, and Y. Hirota, 'High-Speed and High-Output-Power Uni-Traveling-Carrier Photodiodes,' in Proc. the 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society(LEOS 2005), Oct. 2005, pp. 456–457
  14. N. Kashio, K. Kurishima, K. Sano, M. Ida, N.Watanabe and H. Fukuyama, 'Monolithic integration of InP HBTs and uni-traveling-carrier photodiodes using nonselective regrowth,' IEEE Trans. Electron Devices., vol. 54, no. 7, pp. 1651–1657, July 2007
  15. G. P. Agrawal, Fiber-Optic Communication Systems, 3rd Ed., Wiley-Interscience, 2002
  16. X. Wang, K. Kitayama, 'Analysis of beat noise in coherent and incoherent time-spreading OCDMA,' J. Lightwave Technol., vol. 22, no. 10, pp. 2226–2235, Oct. 2004
  17. R. Papannareddy, A. M. Weiner, 'Comparison of BER performance limits for coherent ultrashort light pulse and incoherent broadband CDMA systems,' in Proc. Conf. Lasers and Electro-Optics (CLEO), May 1999, pp.330
  18. W. C. Kwong, G. C. Yang and Y. C. Liu, 'A new family of wavelength-time optical CDMA codes utilizing programmable arrayed waveguide gratings,' IEEE J. Sel. Areas Commun., vol. 23, no. 8, Aug. 2005
  19. H. Sotobayashi,W. Chujo and K. Kitayama, 'Highly spectral-efficient optical code-division multiplexing transmission system,' IEEE J. Sel. Topics in Quantum Electronics, vol. 10, no. 2, pp. 250–258, March/April 2004
  20. R. M. Gagliardi and S. Karp, Optical Communications, 2nd Ed. JohnWiley & Sons, Inc., 1995
  21. A. D. McCoy, M. Ibsen, P. Horak, B. C. Thomsen, and D. J. Richardson, 'Feasibility study of SOA-based noise suppression for spectral amplitude coded OCDMA,' J. Lightwave Technol., pp. 394–401, vol. 25, no. 1, Jan. 2007