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Internally channel-coded framed time-hopping fiber-optic CDMA communications

Azmi, P ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1109/JLT.2005.856233
  3. Publisher: 2005
  4. Abstract:
  5. 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
  6. Keywords:
  7. Code division multiple access ; Communication channels (information theory) ; Computer simulation ; Data communication systems ; Encoding (symbols) ; Fiber optic networks ; Frequency hopping ; Optical systems ; Spread spectrum communication ; Channel-coded framed time hopping ; Fiber optic code division multiple-access (FO-CDMA) system ; Internal channel-coding scheme ; Optical code division multiple access ; Optical orthogonal codes (OOCs) ; Optical communication
  8. Source: Journal of Lightwave Technology ; Volume 23, Issue 11 , 2005 , Pages 3702-3707 ; 07338724 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/1561399