Long haul, repeaterless, coherent optical multichannel communication systems employing hybrid multiplexing schemes wherein Wavelength Division Multiplexing (WDM) and Optical Code Division Multiplexing (OCDM) are combined is analyzed in the presence of performance limiting factors such as Inter Channel Interference (ICI), Stimulated Raman Scattering (SRS) and detector shot noise. Error control coding techniques in the form of rate 1/2 convolutional codes are employed in the system to counter these performance limiting factors. It is seen that the use of error control coding technique can enhance the system performance to such an extent that a Bit Error Rate (BER) performance of less than 10-8 is achievable without crossing the SRS power threshold for as many as 1000 to 1200 channels. Advantages of the hybrid multiplexed system over systems relying solely on WDM or OCDM are also discussed along with the advantages of using error control coding compared to optical amplification in countering the performance degrading factors.

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dc.contributor.authorKumar, M.S.
dc.contributor.authorBhat, K.N.H.
dc.contributor.authorUmesh, G.
dc.date.accessioned2026-02-05T11:00:30Z
dc.date.issuedCoding to enhance performance of hybrid multiplexed coherent optical communication systems in the presence of ICI and SRS
dc.description.abstract2003
dc.identifier.citationJournal of Optical Communications, 2003, 24, 1, pp. 9-16
dc.identifier.issn1734911
dc.identifier.urihttps://doi.org/10.1515/JOC.2003.24.1.9
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27988
dc.publisherFachverlag Schiele und Sohn GmbH
dc.subjectBit error rate
dc.subjectCommunication channels (information theory)
dc.subjectConvolutional codes
dc.subjectPerformance
dc.subjectRaman scattering
dc.subjectShot noise
dc.subjectSignal interference
dc.subjectSystems analysis
dc.subjectWavelength division multiplexing
dc.subjectInterchannel interference
dc.subjectOptical code division multiplexing
dc.subjectStimulated Raman scattering
dc.subjectOptical communication
dc.titleLong haul, repeaterless, coherent optical multichannel communication systems employing hybrid multiplexing schemes wherein Wavelength Division Multiplexing (WDM) and Optical Code Division Multiplexing (OCDM) are combined is analyzed in the presence of performance limiting factors such as Inter Channel Interference (ICI), Stimulated Raman Scattering (SRS) and detector shot noise. Error control coding techniques in the form of rate 1/2 convolutional codes are employed in the system to counter these performance limiting factors. It is seen that the use of error control coding technique can enhance the system performance to such an extent that a Bit Error Rate (BER) performance of less than 10-8 is achievable without crossing the SRS power threshold for as many as 1000 to 1200 channels. Advantages of the hybrid multiplexed system over systems relying solely on WDM or OCDM are also discussed along with the advantages of using error control coding compared to optical amplification in countering the performance degrading factors.

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