EFFICIENT METHOD TO EXTRACT A LOWER ORDER (LO) OPTICAL CHANNEL DATA UNIT (ODU)j SIGNAL FROM HIGHER ORDER (HO) OPTICAL CHANNEL TRANSPORT UNIT (OTU)k SIGNAL
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Jun 30, 2011
filing date -
Jun 30, 2011
priority date (Note) -
Abandoned
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Abstract
A Higher order (HO) Optical channel Data Unit (ODU)k signal is extracted from an HO Optical channel Transport Unit (OTU)k signal using a first clock at or faster than the OTUk clock. An HO Optical channel Payload Unit OPUk signal is extracted from the HO ODUk signal using the first clock. An Optical channel Data Tributary Unit (ODTU) signal is demultiplexed from the HO OPUk signal using the first clock. The ODTU signal is demapped to a lower order (LO) ODUj signal. The LO ODUj data is then smoothed using a smoothing function. Only one clock is used for the multiple stages of extraction of a LO ODUj from a HO OTUk signal.
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