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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12252–12257

Increasing the bit rate in OCDMA systems using pulse position modulation techniques

Vahid R. Arbab, Poorya Saghari, Mahta Haghi, Paniz Ebrahimi, and Alan E. Willner  »View Author Affiliations

Optics Express, Vol. 15, Issue 19, pp. 12252-12257 (2007)

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We have experimentally demonstrated two novel pulse position modulation techniques, namely Double Pulse Position Modulation (2-PPM) and Differential Pulse Position Modulation (DPPM) in Time-Wavelength OCDMA systems that will operate at a higher bit rate compared to traditional OOK-OCDMA systems with the same bandwidth. With 2-PPM technique, the number of active users will be more than DPPM while their bit rate is almost the same. Both techniques provide variable quality of service in OCDMA networks.

© 2007 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 11, 2007
Revised Manuscript: August 31, 2007
Manuscript Accepted: September 10, 2007
Published: September 12, 2007

Vahid R. Arbab, Poorya Saghari, Mahta Haghi, Paniz Ebrahimi, and Alan E. Willner, "Increasing the bit rate in OCDMA systems using pulse position modulation techniques," Opt. Express 15, 12252-12257 (2007)

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  1. J. A. Salehi, "Code division multiple-access techniques in optical fiber networks. I. Fundamental principles," IEEE Trans. Commun. 37, 824-833 (1989). [CrossRef]
  2. A. Stok and E. H. Sargent, "The role of optical CDMA in access networks," IEEE Commun. Magazine 40, 83-87 (2002). [CrossRef]
  3. P. Saghari, R. Omrani, A. E. Willner, and P. V. Kumar, "Analytical interference model for two-dimensional (timewavelength) asynchronous O-CDMA systems using various receiver structures," J. Lightwave Technol. 23, 3260-3269 (2005). [CrossRef]
  4. H. Sugiyama and K. Nosu, "MPPM: a method for improving the band-utilization efficiency in optical PPM," J. Lightwave Techol. 7, 465-472 (1989). [CrossRef]
  5. D. Shiu and J. M. Kahn, "Differential pulse-position modulation for power-efficient optical communication," IEEE Trans. Commun. 47, 1201-1210 (1999). [CrossRef]
  6. H. M. H. Shalaby, "Performance analysis of optical synchronous CDMA communication systems with PPM signaling," IEEE Trans. Commun. 43, 624-634 (1995). [CrossRef]
  7. H. M. H. Shalaby, "A performance analysis of optical overlapping PPM-CDMA communication systems," J. Lightwave Techonl. 17, 426-433 (1999). [CrossRef]
  8. S. Zahedi, J. A. Salehi, and M. Nasiri-Kenari, "M-ary infrared CDMA for indoors wireless communications," IEEE PIMRC Conf. 2, E6-E10 (2001).
  9. P. Saghari, M. Haghi, V. R. Arbab, S. Kumar, R. Golizadeh, A. E. Willner, P. V. Kumar, and J. D. Touch "Experimental Demonstration of Code Position Modulation in an O-CDMA System to Increase the Number of Users," IEEE/OSA Conf. Lasers and Electroptics, CWH3, (2006).
  10. P. Saghari, R. Omrani, V. R. Arbab, A. E. Willner, and P. V. Kumar, "Increasing the Number of Users in an Optical CDMA System by Pulse Postition Modulation," IEEE/OSA Optical Fiber Conf. JThA72, (2007).
  11. H. Fathallah, L. A. Rusch, S. LaRochelle, "Passive optical fast frequency-hop CDMA communications system," J. Lightwave Technol. 17, 397-405 (1999) [CrossRef]

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