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We propose a dual-polarization signal-carrier interleaved direct detection (DP-SCI-DD) scheme to achieve 100% spectrum efficiency with reference to single polarization coherent detection. The channel is modeled as a discrete time Gaussian channel with conjugate inter-symbol interference.
We experimentally evaluate flex-grid network upgrade scenarios, employing variable data rates and modulation formats and show that optical channel power should be assigned with knowledge of existing neighboring traffic to achieve best performance in WDM transmission.
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