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Internally coded time-hopping coherent ultra-short light pulse code division multiple access scheme with optical amplifier and its performance analysis using additive noise model

Tabataba, F. S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-com:20080128
  3. Publisher: 2009
  4. Abstract:
  5. The internally coded time-hopping coherent ultra-short light pulse code division multiple access (CULP CDMA) scheme (recently introduced) with an optical amplifier is described and its performance in fibre-optic communication systems is analysed. In accordance with the important role of optical amplifiers in optical communication systems, a preamplifier at the input of the receiver is used in order to compensate the losses because of the spectral encoder, spectral decoder and optical fibre path. The authors evaluate the bit error rate of the system considering the effects of the multiple access interference, noise because of the optical amplifier and thermal noise using saddle point approximation, and compare the results with those of the conventional CULP CDMA system with and without an amplifier. The numerical results indicate a substantial improvement in the performance of the coded system in comparison with the uncoded one. In addition, the negative effect of amplifier noise in the proposed scheme is much less than that of the conventional CULP CDMA system. © The Institution of Engineering and Technology 2009
  6. Keywords:
  7. Amplifiers (electronic) ; Bit error rate ; Code division multiple access ; Communication systems ; Light amplifiers ; Light pulse generators ; Light transmission ; Multiple access interference ; Optical fibers ; Optical switches ; Optoelectronic devices ; Amplifier noises ; Bit errors ; Cdma systems ; Coded systems ; Numerical results ; Optic communications ; Optical amplifiers ; Optical communication systems ; Optical fibres ; Performance analyses ; Pre-amplifiers ; Saddle points ; Short light pulses ; Substantial improvements ; UNCODED ; Optical communication
  8. Source: IET Communications ; Volume 3, Issue 1 , 2009 , Pages 75-82 ; 17518628 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/4745858