公开(公告)号：US20190165926A1

公开(公告)日：2019-05-30

申请号：US16247368

申请日：2019-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nebojsa STOJANOVIC ,  Changsong XIE

IPC: H04L7/00 ,  H04L25/03 ,  H04B10/54 ,  H04B10/61 ,  H04L1/00

Abstract: The present invention relates to a multi-channel IM-DD optical transceiver comprising at least one transmitter and a receiver, and a method for equalizing input samples at an adjusted sampling phase using a quality parameter linearly proportional to a BER. The data transmission and reception use a single master channel and slave channels, which have a baud rate equal to or lower than the baud rate of the master channel. A reliable and identical clocking of all the channels is obtained through either the receiver clock of the master channel when they are received from a single transmitter or a reference clock whose frequency is higher than the highest clock frequency amongst all the channels when they are received from a combination of transmitters. An enhanced timing recovery circuit is also provided to select optimized finite impulse response filters, calculate filter coefficients and generate the receiver clock of the master channel.

公开(公告)号：US20200244370A1

公开(公告)日：2020-07-30

申请号：US16845489

申请日：2020-04-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nebojsa STOJANOVIC ,  Liang ZHANG ,  Cristian PRODANIUC ,  Jinlong WEI ,  Changsong XIE

IPC: H04B10/54 ,  H04B10/61 ,  H04L1/00

Abstract: An optical communication system that comprises a transmitter adapted to generate a signal by modulating a transmission data as low power consumption symbols of an amplitude modulation format and a monitoring data (MD) as high power consumption symbols of the amplitude modulation format, the MD comprising at least one transmitter parameter and/or at least one receiver parameter of communicating the transmission data. A binary logarithm of a total number of the low power consumption symbols and the high power consumption symbols is a non-integer.