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Multistage decoding for an internally coded fibre-optic time-hopping/optical code division multiple access communication system

Karimi, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-com.2008.0345
  3. Publisher: 2009
  4. Abstract:
  5. A multistage decoder for the internally convolutionally coded fibre-optic time-hopping code division multiple access system recently introduced is considered. In this system, the decoder consists of several stages. The first stage is implemented using one of the single-user decoders introduced. The following stages are maximum likelihood (ML) decoders each of which use the decisions made by the previous stage. The performance of the proposed decoder is evaluated by a Monte Carlo simulation. Numerical results show that a multistage decoder with only two stages greatly outperforms the single-stage decoder with negligible increase in complexity. The authors also derive the Chernoff bound for the ML decoder with known interference, which is the ultimate performance of the multistage decoder. © 2009 The Institution of Engineering and Technology
  6. Keywords:
  7. Chernoff bounds ; Code division multiple access communication systems ; Fibre optics ; Maximum likelihood decoders ; ML decoders ; Monte carlo simulations ; Multistage decoding ; Numerical results ; Single stages ; Single-user decoders ; Time-hopping codes ; Two stages ; Block codes ; Code division multiple access ; Communication systems ; Maximum likelihood ; Monte Carlo methods ; Decoding
  8. Source: IET Communications ; Volume 3, Issue 4 , 2009 , Pages 655-665 ; 17518628 (ISSN)
  9. URL: https://digital-library.theiet.org/content/journals/10.1049/iet-com.2008.0345