Receiver for optical transmission system
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsDomenico Marsella, Marco Secondini, Roberto Magri, Enrico Forestieri
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Abstract
A method of detecting a signal in an optical receiver is described. The method includes converting a received optical signal to a digital electrical signal comprising a plurality of samples, applying a predetermined phase rotation to said samples to obtain amplitude and phase components of phase range adjusted sample values, and performing a first detection process based on the amplitude and phase components of the phase range adjusted sample values.
Claims27
A method of detecting a signal in an optical receiver, the method comprising:
- converting a received optical signal to a digital electrical signal comprising a plurality of samples having in-phase and quadrature components;
- applying a predetermined phase rotation to said samples;
- converting the in-phase and quadrature components to amplitude and phase components;
- applying an inverse of the predetermined phase rotation to the phase components such that phase range adjusted sample values have phases within ranges suitable for detection:
- and
- performing a first detection process based on the amplitude and phase components of the phase range adjusted sample values.
A detector for detecting an optical signal, the detector comprising a processor that is operative to:
- convert a received optical signal to a digital electrical signal comprising a plurality of samples having in-phase and quadrature components;
- apply a predetermined phase rotation to said samples;
- convert the in-phase and quadrature components to amplitude and phase components;
- apply an inverse of the predetermined phase rotation to the phase components such that phase range adjusted sample values have phases within ranges suitable for detection:
- and
- perform a first detection process based on the amplitude and phase components of the phase range adjusted sample values.
A non-transitory computer readable storage medium having instructions stored therein, wherein the instructions, when executed by a processor of an optical device, causes the processor to perform operations comprising:
- converting a received optical signal to a digital electrical signal comprising a plurality of samples having in-phase and quadrature components;
- applying a predetermined phase rotation to said samples;
- converting the in-phase and quadrature components to amplitude and phase components:
- applying an inverse of the predetermined phase rotation to the phase components such that phase range adjusted sample values have phases within ranges suitable for detection;
- and
- performing a first detection process based on the amplitude and phase components of the phase range adjusted sample values.
Dependencies are inferred from the claim text.