| 摘要 |
<p>The present document relates to optical transmission systems. In particular, the present document relates to systems and methods which enable fast setup of Optical Multiplex Section Protection (OMSP) when using coherent optical detection. An optical receiver setup (650) is described. The optical receiver setup comprises first reception means configured to receive a first plurality of distorted wavelength division multiplex (WDM) channel signals (222, 322); second reception means configured to receive a second plurality of distorted WDM channel signals (221, 321); switching means (205, 206, 605) configured to link a first set (224, 329) of the first plurality of distorted WDM channel signals (222, 322) and a complementary second set (223, 326) of the second plurality of distorted WDM channel signals (221, 321) to a plurality of optical receivers; wherein a first residual set (243, 328) of the first plurality of distorted WDM channel signals (222, 322) comprises one or more of the distorted WDM channel signals not linked to the plurality of optical receivers. The setup further comprises the plurality of optical receivers comprising a corresponding plurality of equalizers configured to compensate the distortions incurred by the first set (224, 329) and the second set (223, 326) using a plurality of parameter sets, respectively; a parameter determination unit (610) configured to determine an estimate of a first residual parameter set specific to a first residual distorted WDM channel signal comprised within the first residual set (243, 328); wherein the switching means (205, 206, 605) are configured to link the first residual set (243, 328) to and to remove the second set (223, 326) from the plurality of optical receivers; and wherein an equalizer of the plurality of equalizers is configured to use the estimate of the first residual parameter set for compensating the distortions incurred by the first residual WDM channel signal.</p> |
