公开(公告)号：US11303381B2

公开(公告)日：2022-04-12

申请号：US16084461

申请日：2017-03-14

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish Rafique ,  Bernhard Spinnler

IPC: H04B10/60 ,  H04J14/06 ,  H04J14/02 ,  H04B10/61 ,  H04L27/20

Abstract: Disclosed is a receiver for receiving an optical signal comprising a plurality of carriers within a predetermined frequency band. The receiver comprises means for sampling and converting each of the carriers into a set of corresponding digital signals, and a digital processing unit for processing said digital signals of said set of digital signals such as to mitigate transmission impairments of the corresponding optical carriers based on corresponding processing parameters. The digital processing unit is configured for determining such processing parameters by carrying out a corresponding parameter derivation procedure based on one of the digital signals of said set of digital signals. The processing unit is configured for sharing thus determined processing parameters for processing of other digital signals among said set of digital signals based on said shared determined processing parameters, or processing parameters derived from said shared determined processing parameters.

公开(公告)号：US11088775B2

公开(公告)日：2021-08-10

申请号：US16462845

申请日：2017-11-21

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish Rafique ,  Lutz Rapp

IPC: H04J14/02

Abstract: Disclosed herein is a method of transmitting a data stream from a first location to a second location through an optical network, as well as a corresponding performance monitoring unit, a transmitting arrangement and a receiving arrangement. The method comprises the steps of transmitting said data stream from said first location to said second location along a working path, wherein said data stream is transmitted in the form of a super channel comprising a number of n wavelengths within a predefined reserved wavelength range, monitoring the performance of the transmission based on the super channel signal received at said second location, and in case the performance is observed to drop below a predetermined performance threshold, unburdening the super channel from a part of said data stream while maintaining the reserved wavelength range for said super channel, by redirecting said part of the data stream for transmittal along at least one restoration path connecting said first and second locations, and transmitting the remainder of said data stream within the super channel on a number of wavelengths that is less than n, and/or with a reduced transmission rate for at least some of the wavelengths in said super channel.

公开(公告)号：US10917170B2

公开(公告)日：2021-02-09

申请号：US16091787

申请日：2017-03-23

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish Rafique ,  Stefano Calabró

IPC: H04B10/50 ,  H04B10/516 ,  H04J14/02 ,  H04B10/079 ,  H04L27/34 ,  H04L5/00 ,  H03M13/25 ,  H04L27/36 ,  H04L1/00 ,  H04J14/06

Abstract: Disclosed herein is a method for transmitting digital data in a super channel, in which a set of carriers are packed in a predetermined bandwidth. The set of carriers comprises higher and lower edge carriers having the highest and lowest wavelengths, respectively, among said set of earners, wherein data is transmitted via the higher and lower edge carriers using a corresponding modulation format, each modulation format using a constellation diagram comprising a number of symbols, wherein a binary address is associated with each symbol. Said method comprises the steps of: separating digital data to be transmitted via each of said higher and lower edge carriers into corresponding first and second data streams, and for each of said higher and lower edge carriers, mapping the data of the first data stream to predetermined first bit positions within the binary symbol addresses and the data of the second data stream to predetermined second bit positions within the binary symbol addresses, wherein said first bit positions are bit positions which have an error probability less than the average error probability of all bit positions.