The laser linewidth effect on interference cancellation in asynchronous coherent OCDMA systems
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium（2000）
摘要
Interference cancellation within both detection and carrier phase estimation processes asynchronous coherent OCDMA systems is proposed. At the receiver, knowledge gained from the synchronization and detection is used to rebuild and remove the interference from the detected signal. The key advantage of the proposed system is that it can be performed directly in the electrical domain. Since an essential implementation issue with coherent optical communications is generated by the linewidth of the laser source, the effect of laser linewidth on the cancellation is investigated. By applying cancellation within the phase estimation, the stringent requirements with respect to the laser linewidth can be relaxed
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关键词
code division multiple access,interference suppression,light coherence,light interference,optical communication,optical fibre networks,optical signal detection,spectral line breadth,synchronisation,wdm,asynchronous coherent ocdma systems,carrier phase estimation,coherent optical communications,detected signal,detection,electrical domain,high-capacity optical fiber networks,interference cancellation,laser linewidth effect,laser source,optical pulse cdma system,receiver,synchronization,wavelength division multiplexing,error probability,phase detection,signal detection,system performance
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