Abstract

Due to the low cardinality of optical orthogonal codes (OOCs) with a correlation value of 1, the capability of an internal channel-coding scheme cannot be applied effectively for an increasing number of simultaneous users in a typical fiber-optic code division multiple-access (FO-CDMA) system. In this paper, we consider applying the internal channel-coding scheme to the framed time-hopping (FTH) FO-CDMA system. Due to the extremely high cardinality of the spreading sequence in FTH FO-CDMA, the technique highlights the ability of the internal channel-coding scheme to increase the effective number of users in an FO-CDMA system. For the FTH FO-CDMA system, we only consider a Poisson noise-limited channel and do not take into account the physical fiber-optic channel impairments. Our simulation and analytical results show that, due to the large cardinality of spreading codes, the capability of the internal channel-coding technique to increase the maximum number of simultaneous users becomes more obvious in the FTH FO-CDMA system.

© 2005 IEEE

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  1. P. Azmi, M. Nasiri-Kenari and J. A. Salehi, "Low-rate super orthogonal channel coding for fiber-optic CDMA communication systems", J. Lightw. Technol., vol. 19, no. 6, pp. 847-856, Jun. 2001.
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  14. T. Ohtuski and J. M. Kahn, "BER performance of turbo-coded PPM CDMA systems on optical fiber", J. Lightw. Technol., vol. 18, no. 12, pp. 1776-1784, Dec. 2000.
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  16. P. Azmi, M. Nasiri-Kenari and J. A. Salehi, "Multistage decoding for internally bandwidth efficient coded Poisson fiber-optic CDMA communication systems", J. Lightw. Technol., vol. 20, no. 8, pp. 1342-1349, Aug. 2002.
  17. J. A. Salehi, "Code division multiple-access techniques in optical fiber networks-Part I: Fundamental principles", IEEE Trans. Commun., vol. 37, no. 8, pp. 824-833, Aug. 1989.
  18. F. R. K. Chung, J. A. Salehi and V. K. Wei, "Optical orthogonal codes: Design, analysis and applications", IEEE Trans. Inf. Theory, vol. 35, no. 3, pp. 595-604, May 1989.
  19. L. B. Nelson and V. Poor, "Performance of multiuser detection for optical CDMA-Part I: Error probabilities", IEEE Trans. Commun., vol. 43, no. 11, pp. 2803-2811, Nov. 1995.

Other (19)

P. Azmi, M. Nasiri-Kenari and J. A. Salehi, "Low-rate super orthogonal channel coding for fiber-optic CDMA communication systems", J. Lightw. Technol., vol. 19, no. 6, pp. 847-856, Jun. 2001.

A. R. Forouzan, J. A. Salehi and M. Nasiri-Kenari, "Frame time-hopping fiber-optic code-division multiple access using generalized optical orthogonal codes", IEEE Trans. Commun., vol. 50, no. 12, pp. 1971-1983, Dec. 2002.

J. Ratan, "Optical CDMA in broadband communication scope and applications", J. Opt. Commun., vol. 23, no. 1, pp. 11-21, Jan. 2002.

A. Stok and E. H. Sargent, "The role of optical CDMA in access networks", IEEE Commun. Mag., vol. 40, no. 9, pp. 83-87, Sep. 2002.

H. M. H. Shalaby, "Performance analysis of an optical CDMA random access protocol", J. Lightw. Technol., vol. 22, no. 5, pp. 1233-1241, May 2004.

H. M. H. Shalaby, "Optimality of the users strength in optical PPM-CDMA channels", IEEE Trans. Commun., vol. 53, no. 2, pp. 315-322, Feb. 2004.

A. Peter, B. Dayan, Y. Silberberg and A. A. Friesem, "Optical code-division multiple access using broad-and parametrically generated light", J. Lightw. Technol., vol. 22, no. 6, pp. 1463-1471, Jun. 2004.

S. V. Maric and K. N. Lau, "Multirate fiber-optic CDMA: System design and performance analysis", J. Lightw. Technol., vol. 16, no. 1, pp. 9-17, Jan. 1998.

A. Stok and E. H. Sargent, "System performance comparison of optical CDMA and WDMA in a broadcast local area network", IEEE Commun. Lett., vol. 6, no. 6, pp. 409-411, Sep. 2002.

M. S. Kumar, "Asynchronous BPPM OCDMA systems with trellis-coded modulation", Proc. Inst. Elect. Eng., Optoelectron., vol. 151, no. 4, pp. 193-201, Aug. 2004.

G. E. Atkin and H. P. Corrales, "Orthogonal convolutional coding for the PPM optical channel", J. Lightw. Technol., vol. 7, no. 4, pp. 731-734, Apr. 1989.

M. R. Dale and R. M. Gagliardi, "Channel coding for asynchronous fiberoptic CDMA communication", IEEE Trans. Commun., vol. 43, no. 9, pp. 2485-2489, Sep. 1995.

J. Y. Kim and H. V. Poor, "Turbo-coded packet transmission for an optical CDMA network", J. Lightw. Technol., vol. 18, no. 12, pp. 1905-1916, Dec. 2000.

T. Ohtuski and J. M. Kahn, "BER performance of turbo-coded PPM CDMA systems on optical fiber", J. Lightw. Technol., vol. 18, no. 12, pp. 1776-1784, Dec. 2000.

P. Azmi, M. Nasiri-Kenari and J. A. Salehi, "Soft-input decoder for internally channel coded fiber-optic CDMA communication systems", IEEE Trans. Commun., vol. 50, no. 12, pp. 1994-2002, Dec. 2002.

P. Azmi, M. Nasiri-Kenari and J. A. Salehi, "Multistage decoding for internally bandwidth efficient coded Poisson fiber-optic CDMA communication systems", J. Lightw. Technol., vol. 20, no. 8, pp. 1342-1349, Aug. 2002.

J. A. Salehi, "Code division multiple-access techniques in optical fiber networks-Part I: Fundamental principles", IEEE Trans. Commun., vol. 37, no. 8, pp. 824-833, Aug. 1989.

F. R. K. Chung, J. A. Salehi and V. K. Wei, "Optical orthogonal codes: Design, analysis and applications", IEEE Trans. Inf. Theory, vol. 35, no. 3, pp. 595-604, May 1989.

L. B. Nelson and V. Poor, "Performance of multiuser detection for optical CDMA-Part I: Error probabilities", IEEE Trans. Commun., vol. 43, no. 11, pp. 2803-2811, Nov. 1995.

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