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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 27, Iss. 10 — May. 15, 2009
  • pp: 1262–1268

IP Routing and Traffic Analysis in Coherent Optical CDMA Networks

M. Massoud Karbassian and Hooshang Ghafouri-Shiraz

Journal of Lightwave Technology, Vol. 27, Issue 10, pp. 1262-1268 (2009)

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This paper proposes a novel IP routing schemes over coherent optical code-division multiple-access (OCDMA) network. As spreading code, flexible in length double-padded modified prime code (DPMPC) has been deployed. The performance has been analyzed in terms of the users' channel utilization factor in the network. The results are comparable with previous schemes and indicate that the architecture is power efficient and capable of accommodating greater number of active users with advantage of shorter code length (i.e., higher bit rate). It is shown that for a maximum bit rate the network performance can be improved by reducing the channel utilization. However, when each user in the network has a fixed bit rate, optimal channel utilization can be set for the overall network performance. Additionally, each IP packet is buffered only at the edge of this network, thus the buffer delay is significantly reduced compared with traditional routing schemes. Since the optical encoder is adjusted for number of packets rather than individually, the encoder adjusting time is also significantly reduced. Analytical results clearly indicate that coherent OCDMA technique can be a fine candidate for the future ultra fast optical IP networks.

© 2009 IEEE

M. Massoud Karbassian and Hooshang Ghafouri-Shiraz, "IP Routing and Traffic Analysis in Coherent Optical CDMA Networks," J. Lightwave Technol. 27, 1262-1268 (2009)

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