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Future flexible transceivers will be able to adjust modulation format, symbol rate and FEC scheme according to the channel and network conditions. This paper uses a combination of theoretical derivations and experimental results to recommend the best set of parameters to satisfy a specific demand to be routed along the network. In particular, for a given required OSNR (which is related to reach) and...
We propose a method for optical link survivability preservation by acting on the transmitter launch power and bit rate, and on the receiver DSP for linear/nonlinear impairments compensation. We validated the method for a legacy high-loss Brazilian network.
We show that phase noise estimation based on Bayesian filtering outperforms conventional time-domain approaches in the presence of moderate measurement noise. Additionally, carrier synchronization based on Bayesian filtering, in combination with expectation maximization, is demonstrated for the first time experimentally
Benefits of a low-complexity adaptive 32-tap 2×2 MIMO frequency-domain filter update by data-aided channel estimation over a time-domain filter with DD-LMS are shown. Superior stability and convergence speed is demonstrated with identical impairment tolerance.
Employing a known training sequence robust and precise PDL and OSNR monitoring is demonstrated over a wide range of combined distortions. The proposed in-service monitoring technique is insensitive to CD, PMD and SOP rotation.
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